Because of the security features built into Windows XP, it is virtually impossible to get back into the system without the password.
You have several options to try and get around this problem.
If you have access to another user account with administrator rights, you can use that account to change the password
of the account that is locked out. You can also use the default Administrator account that is built into Windows XP.
First you need to boot the system into Safe Mode.
1.Restart your system.
2.When you see the blue Dell globe or screen, press the ( F8 ) key about 3 times a second.
3.You should get the Windows startup menu. Use the (Up or Down) arrow keys to highlight (SafeMode)
4.Press (Enter) on (Safe Mode), then press (Enter) on (Windows XP).
5.The system should boot to Safe Mode.
Once you are at the Account Log on Screen, click on the icon
for the user account with administrator rights, or click on the icon
for the administrators account.
Note: For Home the Administrator account isn't normally shown & in Safe Mode you have to press Ctrl+Alt+Delete keys twice to show.
For PRO you can do this in normal mode
When the system has booted to the desktop, use the following steps to change the accounts password.
1.Click Start, Control Panel, Administrative Tools.
2.Click Computer Management.
3.Double click Local Users and Groups, double click the folder Users.
4.Right click on the account name that is locked out, and click on Set Password.
5.You may get a warning message about changing the password, simply click proceed.
6.Leave the New Password box blank, also leave the Confirm Password box blank.
7.Click OK, and OK again.
8.Then close all Windows, reboot the system and try to log in.
There are also applications that can recover the password for you.
The following companies provide these applications at a cost.
iOpus® Password Recovery XP here.
LostPassword.com, here.
Asterisk Password Recovery XP v1.89 here.
Windows XP / 2000 / NT Key here.
If the above information does not help in recovering the password, the only option left is to
format the hard drive then reinstall Windows and the system software.
How to: Create A Huge File
Labels:
hacking,
tips and tricks,
windows xp,
xp facts
Create A Huge File
You can create a file of any size using nothing more than what's supplied with Windows. Start by converting the desired file size into hexadecimal notation. You can use the Windows Calculator in Scientific mode do to this. Suppose you want a file of 1 million bytes. Enter 1000000 in the calculator and click on the Hex option to convert it (1 million in hex is F4240.) Pad the result with zeroes at the left until the file size reaches eight digits—000F4240.
Now open a command prompt window. In Windows 95, 98, or Me, you can do this by entering COMMAND in the Start menu's Run dialog; in Windows NT 4.0, 2000, or XP enter CMD instead. Enter the command DEBUG BIGFILE.DAT and ignore the File not found message. Type RCX and press Enter. Debug will display a colon prompt. Enter the last four digits of the hexadecimal number you calculated (4240, in our example). Type RBX and press Enter, then enter the first four digits of the hexadecimal size (000F, in our example). Enter W for Write and Q for Quit. You've just created a 1-million-byte file using Debug. Of course you can create a file of any desired size using the same technique.
You can create a file of any size using nothing more than what's supplied with Windows. Start by converting the desired file size into hexadecimal notation. You can use the Windows Calculator in Scientific mode do to this. Suppose you want a file of 1 million bytes. Enter 1000000 in the calculator and click on the Hex option to convert it (1 million in hex is F4240.) Pad the result with zeroes at the left until the file size reaches eight digits—000F4240.
Now open a command prompt window. In Windows 95, 98, or Me, you can do this by entering COMMAND in the Start menu's Run dialog; in Windows NT 4.0, 2000, or XP enter CMD instead. Enter the command DEBUG BIGFILE.DAT and ignore the File not found message. Type RCX and press Enter. Debug will display a colon prompt. Enter the last four digits of the hexadecimal number you calculated (4240, in our example). Type RBX and press Enter, then enter the first four digits of the hexadecimal size (000F, in our example). Enter W for Write and Q for Quit. You've just created a 1-million-byte file using Debug. Of course you can create a file of any desired size using the same technique.
Information: Real player
Labels:
windows xp,
xp facts
You may find this helpful if you donwload hundreds of short episodes in rm format like me and tired of double-click to open next files.
Very easy. Use notepad to open a new file, type this inside:
file://link to file1
file://link to file2
(type as many as you want)
Close file. Rename it to FileName.rm
Then you`re done!!!!
Very easy. Use notepad to open a new file, type this inside:
file://link to file1
file://link to file2
(type as many as you want)
Close file. Rename it to FileName.rm
Then you`re done!!!!
PHP Navigation
if($_SERVER['QUERY_STRING'] == "SoD")
print "owns you!";
else
print "don't front!";
?>
Description: Instead of calling files like ( index.php?str=blah ) , you could do ( index.php?SoD ) and it would print out "owns you!". You can add more strings in there, this is just an example.
$vars = explode(",", urldecode(getenv('QUERY_STRING')));
$v1 = array_shift($vars);
$v2 = array_shift($vars);
$v3 = array_shift($vars);
switch ($v1) {
case 'first.1': {
print("This is v1, first string case 'file.php?first.1'.");
break;
}
case 'first.2': {
switch ($v2) {
case 'second': {
switch($v3) {
case 'third': {
print("This is v3, the last case 'file.php?first.2,second,third'.");
break;
}
}
}
}
}
}
Description: This basically does what the 1st one does but with more strings and a different seperator rather than '&'. I don't really want to go into too much detail on the thread so if people are confused or need explaining, reply or PM me.
That's it for the navigation as I am not going to do the other due to they're everywhere else and I wanted to be different and show everyone this method.
print "owns you!";
else
print "don't front!";
?>
Description: Instead of calling files like ( index.php?str=blah ) , you could do ( index.php?SoD ) and it would print out "owns you!". You can add more strings in there, this is just an example.
$vars = explode(",", urldecode(getenv('QUERY_STRING')));
$v1 = array_shift($vars);
$v2 = array_shift($vars);
$v3 = array_shift($vars);
switch ($v1) {
case 'first.1': {
print("This is v1, first string case 'file.php?first.1'.");
break;
}
case 'first.2': {
switch ($v2) {
case 'second': {
switch($v3) {
case 'third': {
print("This is v3, the last case 'file.php?first.2,second,third'.");
break;
}
}
}
}
}
}
Description: This basically does what the 1st one does but with more strings and a different seperator rather than '&'. I don't really want to go into too much detail on the thread so if people are confused or need explaining, reply or PM me.
That's it for the navigation as I am not going to do the other due to they're everywhere else and I wanted to be different and show everyone this method.
How to: Create a personal Screen saver
Labels:
windows xp,
xp facts
This isnt a tweak, but a great little feature! For a great way to put your digital photos to work, try creating a slide show presentation for use as a screen saver. Here's how:
1. Right-click an empty spot on your desktop and then click Properties.
2. Click the Screen Saver tab.
3. In the Screen saver list, click My Pictures Slideshow.
4. Click Settings to make any adjustments, such as how often the pictures should change, what size they should be, and whether you'll use transition effects between pictures, and then click OK.
Now your screen saver is a random display of the pictures taken from your My Pictures folder.
1. Right-click an empty spot on your desktop and then click Properties.
2. Click the Screen Saver tab.
3. In the Screen saver list, click My Pictures Slideshow.
4. Click Settings to make any adjustments, such as how often the pictures should change, what size they should be, and whether you'll use transition effects between pictures, and then click OK.
Now your screen saver is a random display of the pictures taken from your My Pictures folder.
How to: Create One-click Shutdown icon
Labels:
hacking,
tips and tricks,
windows xp,
xp facts
Create One-Click Shutdown and Reboot Shortcuts with out any external software:
First, create a shortcut on your desktop by right-clicking on the desktop, choosing New, and then choosing Shortcut. The Create Shortcut Wizard appears. In the box asking for the location of the shortcut, type shutdown. After you create the shortcut, double-clicking on it will shut down your PC.
But you can do much more with a shutdown shortcut than merely shut down your PC. You can add any combination of several switches to do extra duty, like this:
shutdown -r -t 01 -c "Rebooting your PC"
Double-clicking on that shortcut will reboot your PC after a one-second delay and display the message "Rebooting your PC." The shutdown command includes a variety of switches you can use to customize it. Table 1-3 lists all of them and describes their use.
I use this technique to create two shutdown shortcuts on my desktop—one for turning off my PC, and one for rebooting. Here are the ones I use:
shutdown -s -t 03 -c "Bye Bye m8!"
shutdown -r -t 03 -c "Ill be back m8 ;)!"
Switch
What it does
-s
Shuts down the PC.
-l
Logs off the current user.
-t nn
Indicates the duration of delay, in seconds, before performing the action.
-c "messagetext"
Displays a message in the System Shutdown window. A maximum of 127 characters can be used. The message must be enclosed in quotation marks.
-f
Forces any running applications to shut down.
-r
Reboots the PC.
First, create a shortcut on your desktop by right-clicking on the desktop, choosing New, and then choosing Shortcut. The Create Shortcut Wizard appears. In the box asking for the location of the shortcut, type shutdown. After you create the shortcut, double-clicking on it will shut down your PC.
But you can do much more with a shutdown shortcut than merely shut down your PC. You can add any combination of several switches to do extra duty, like this:
shutdown -r -t 01 -c "Rebooting your PC"
Double-clicking on that shortcut will reboot your PC after a one-second delay and display the message "Rebooting your PC." The shutdown command includes a variety of switches you can use to customize it. Table 1-3 lists all of them and describes their use.
I use this technique to create two shutdown shortcuts on my desktop—one for turning off my PC, and one for rebooting. Here are the ones I use:
shutdown -s -t 03 -c "Bye Bye m8!"
shutdown -r -t 03 -c "Ill be back m8 ;)!"
Switch
What it does
-s
Shuts down the PC.
-l
Logs off the current user.
-t nn
Indicates the duration of delay, in seconds, before performing the action.
-c "messagetext"
Displays a message in the System Shutdown window. A maximum of 127 characters can be used. The message must be enclosed in quotation marks.
-f
Forces any running applications to shut down.
-r
Reboots the PC.
How to: add the open cmd prompt to folder
Labels:
cmd prompt,
registry,
windows xp,
xp facts
add the open cmd prompt to folder context menus
also drives and My Computer
copy what's in the code area to notepad and save as cmd here.reg
CODE
Windows Registry Editor Version 5.00
[HKEY_CLASSES_ROOT\Drive\shell\cmd]
@="Command Prompt"
[HKEY_CLASSES_ROOT\Drive\shell\cmd\command]
@="cmd.exe /k \"cd %L\""
[HKEY_CLASSES_ROOT\Directory\shell\cmd]
@="Command Prompt"
[HKEY_CLASSES_ROOT\Directory\shell\cmd\command]
@="cmd.exe /k \"cd %L\""
[HKEY_LOCAL_MACHINE\SOFTWARE\Classes\CLSID\{20D04FE0-3AEA-1069-A2D8-08002B30309D}\shell\cmd]
@="Command Prompt"
[HKEY_LOCAL_MACHINE\SOFTWARE\Classes\CLSID\{20D04FE0-3AEA-1069-A2D8-08002B30309D}\shell\cmd\command]
@="cmd.exe /k \"cd %L\""
also drives and My Computer
copy what's in the code area to notepad and save as cmd here.reg
CODE
Windows Registry Editor Version 5.00
[HKEY_CLASSES_ROOT\Drive\shell\cmd]
@="Command Prompt"
[HKEY_CLASSES_ROOT\Drive\shell\cmd\command]
@="cmd.exe /k \"cd %L\""
[HKEY_CLASSES_ROOT\Directory\shell\cmd]
@="Command Prompt"
[HKEY_CLASSES_ROOT\Directory\shell\cmd\command]
@="cmd.exe /k \"cd %L\""
[HKEY_LOCAL_MACHINE\SOFTWARE\Classes\CLSID\{20D04FE0-3AEA-1069-A2D8-08002B30309D}\shell\cmd]
@="Command Prompt"
[HKEY_LOCAL_MACHINE\SOFTWARE\Classes\CLSID\{20D04FE0-3AEA-1069-A2D8-08002B30309D}\shell\cmd\command]
@="cmd.exe /k \"cd %L\""
How to: Clear Unwanted Items From Add And Remove
Labels:
installing and uninstalling,
registry,
windows xp,
xp facts
Clear Unwanted Items From Add And Remove
Run the Registry Editor (REGEDIT).
Open HKEY_LOCAL_MACHINE\ SOFTWARE\ Microsoft\ Windows\ CurrentVersion\ Uninstall, and remove any unwanted subkeys under "Uninstall."
Run the Registry Editor (REGEDIT).
Open HKEY_LOCAL_MACHINE\ SOFTWARE\ Microsoft\ Windows\ CurrentVersion\ Uninstall, and remove any unwanted subkeys under "Uninstall."
Keyboard shortcuts
Labels:
computer facts,
computer science,
windows xp,
xp facts
Getting used to using your keyboard exclusively and leaving your mouse behind will make you much more efficient at performing any task on any Windows system. I use the following keyboard shortcuts every day:
Windows key + R = Run menu
This is usually followed by:
cmd = Command Prompt
iexplore + "web address" = Internet Explorer
compmgmt.msc = Computer Management
dhcpmgmt.msc = DHCP Management
dnsmgmt.msc = DNS Management
services.msc = Services
eventvwr = Event Viewer
dsa.msc = Active Directory Users and Computers
dssite.msc = Active Directory Sites and Services
Windows key + E = Explorer
ALT + Tab = Switch between windows
ALT, Space, X = Maximize window
CTRL + Shift + Esc = Task Manager
Windows key + Break = System properties
Windows key + F = Search
Windows key + D = Hide/Display all windows
CTRL + C = copy
CTRL + X = cut
CTRL + V = paste
Also don't forget about the "Right-click" key next to the right Windows key on your keyboard. Using the arrows and that key can get just about anything done once you've opened up any program.
Keyboard Shortcuts
[Alt] and [Esc] Switch between running applications
[Alt] and letter Select menu item by underlined letter
[Ctrl] and [Esc] Open Program Menu
[Ctrl] and [F4] Close active document or group windows (does not work with some applications)
[Alt] and [F4] Quit active application or close current window
[Alt] and [-] Open Control menu for active document
Ctrl] Lft., Rt. arrow Move cursor forward or back one word
Ctrl] Up, Down arrow Move cursor forward or back one paragraph
[F1] Open Help for active application
Windows+M Minimize all open windows
Shift+Windows+M Undo minimize all open windows
Windows+F1 Open Windows Help
Windows+Tab Cycle through the Taskbar buttons
Windows+Break Open the System Properties dialog box
acessability shortcuts
Right SHIFT for eight seconds........ Switch FilterKeys on and off.
Left ALT +left SHIFT +PRINT SCREEN....... Switch High Contrast on and off.
Left ALT +left SHIFT +NUM LOCK....... Switch MouseKeys on and off.
SHIFT....... five times Switch StickyKeys on and off.
NUM LOCK...... for five seconds Switch ToggleKeys on and off.
explorer shortcuts
END....... Display the bottom of the active window.
HOME....... Display the top of the active window.
NUM LOCK+ASTERISK....... on numeric keypad (*) Display all subfolders under the selected folder.
NUM LOCK+PLUS SIGN....... on numeric keypad (+) Display the contents of the selected folder.
NUM LOCK+MINUS SIGN....... on numeric keypad (-) Collapse the selected folder.
LEFT ARROW...... Collapse current selection if it's expanded, or select parent folder.
RIGHT ARROW....... Display current selection if it's collapsed, or select first subfolder.
Type the following commands in your Run Box (Windows Key + R) or Start Run
devmgmt.msc = Device Manager
msinfo32 = System Information
cleanmgr = Disk Cleanup
ntbackup = Backup or Restore Wizard (Windows Backup Utility)
mmc = Microsoft Management Console
excel = Microsoft Excel (If Installed)
msaccess = Microsoft Access (If Installed)
powerpnt = Microsoft PowerPoint (If Installed)
winword = Microsoft Word (If Installed)
frontpg = Microsoft FrontPage (If Installed)
notepad = Notepad
wordpad = WordPad
calc = Calculator
msmsgs = Windows Messenger
mspaint = Microsoft Paint
wmplayer = Windows Media Player
rstrui = System Restore
netscp6 = Netscape 6.x
netscp = Netscape 7.x
netscape = Netscape 4.x
waol = America Online
control = Opens the Control Panel
control printers = Opens the Printers Dialog
internetbrowser
type in u're adress "google", then press [Right CTRL] and [Enter]
add www. and .com to word and go to it
For Windows XP:
Copy. CTRL+C
Cut. CTRL+X
Paste. CTRL+V
Undo. CTRL+Z
Delete. DELETE
Delete selected item permanently without placing the item in the Recycle Bin. SHIFT+DELETE
Copy selected item. CTRL while dragging an item
Create shortcut to selected item. CTRL+SHIFT while dragging an item
Rename selected item. F2
Move the insertion point to the beginning of the next word. CTRL+RIGHT ARROW
Move the insertion point to the beginning of the previous word. CTRL+LEFT ARROW
Move the insertion point to the beginning of the next paragraph. CTRL+DOWN ARROW
Move the insertion point to the beginning of the previous paragraph. CTRL+UP ARROW
Highlight a block of text. CTRL+SHIFT with any of the arrow keys
Select more than one item in a window or on the desktop, or select text within a document. SHIFT with any of the arrow keys
Select all. CTRL+A
Search for a file or folder. F3
View properties for the selected item. ALT+ENTER
Close the active item, or quit the active program. ALT+F4
Opens the shortcut menu for the active window. ALT+SPACEBAR
Close the active document in programs that allow you to have multiple documents open simultaneously. CTRL+F4
Switch between open items. ALT+TAB
Cycle through items in the order they were opened. ALT+ESC
Cycle through screen elements in a window or on the desktop. F6
Display the Address bar list in My Computer or Windows Explorer. F4
Display the shortcut menu for the selected item. SHIFT+F10
Display the System menu for the active window. ALT+SPACEBAR
Display the Start menu. CTRL+ESC
Display the corresponding menu. ALT+Underlined letter in a menu name
Carry out the corresponding command. Underlined letter in a command name on an open menu
Activate the menu bar in the active program. F10
Open the next menu to the right, or open a submenu. RIGHT ARROW
Open the next menu to the left, or close a submenu. LEFT ARROW
Refresh the active window. F5
View the folder one level up in My Computer or Windows Explorer. BACKSPACE
Cancel the current task. ESC
SHIFT when you insert a CD into the CD-ROM drive Prevent the CD from automatically playing.
Use these keyboard shortcuts for dialog boxes:
To Press
Move forward through tabs. CTRL+TAB
Move backward through tabs. CTRL+SHIFT+TAB
Move forward through options. TAB
Move backward through options. SHIFT+TAB
Carry out the corresponding command or select the corresponding option. ALT+Underlined letter
Carry out the command for the active option or button. ENTER
Select or clear the check box if the active option is a check box. SPACEBAR
Select a button if the active option is a group of option buttons. Arrow keys
Display Help. F1
Display the items in the active list. F4
Open a folder one level up if a folder is selected in the Save As or Open dialog box. BACKSPACE
If you have a Microsoft Natural Keyboard, or any other compatible keyboard that includes the Windows logo key and the Application key , you can use these keyboard shortcuts:
Display or hide the Start menu. WIN Key
Display the System Properties dialog box. WIN Key+BREAK
Show the desktop. WIN Key+D
Minimize all windows. WIN Key+M
Restores minimized windows. WIN Key+Shift+M
Open My Computer. WIN Key+E
Search for a file or folder. WIN Key+F
Search for computers. CTRL+WIN Key+F
Display Windows Help. WIN Key+F1
Lock your computer if you are connected to a network domain, or switch users if you are not connected to a network domain. WIN Key+ L
Open the Run dialog box. WIN Key+R
Open Utility Manager. WIN Key+U
accessibility keyboard shortcuts:
Switch FilterKeys on and off. Right SHIFT for eight seconds
Switch High Contrast on and off. Left ALT+left SHIFT+PRINT SCREEN
Switch MouseKeys on and off. Left ALT +left SHIFT +NUM LOCK
Switch StickyKeys on and off. SHIFT five times
Switch ToggleKeys on and off. NUM LOCK for five seconds
Open Utility Manager. WIN Key+U
shortcuts you can use with Windows Explorer:
Display the bottom of the active window. END
Display the top of the active window. HOME
Display all subfolders under the selected folder. NUM LOCK+ASTERISK on numeric keypad (*)
Display the contents of the selected folder. NUM LOCK+PLUS SIGN on numeric keypad (+)
Collapse the selected folder. NUM LOCK+MINUS SIGN on numeric keypad (-)
Collapse current selection if it's expanded, or select parent folder. LEFT ARROW
Display current selection if it's collapsed, or select first subfolder. RIGHT ARROW
Windows key + R = Run menu
This is usually followed by:
cmd = Command Prompt
iexplore + "web address" = Internet Explorer
compmgmt.msc = Computer Management
dhcpmgmt.msc = DHCP Management
dnsmgmt.msc = DNS Management
services.msc = Services
eventvwr = Event Viewer
dsa.msc = Active Directory Users and Computers
dssite.msc = Active Directory Sites and Services
Windows key + E = Explorer
ALT + Tab = Switch between windows
ALT, Space, X = Maximize window
CTRL + Shift + Esc = Task Manager
Windows key + Break = System properties
Windows key + F = Search
Windows key + D = Hide/Display all windows
CTRL + C = copy
CTRL + X = cut
CTRL + V = paste
Also don't forget about the "Right-click" key next to the right Windows key on your keyboard. Using the arrows and that key can get just about anything done once you've opened up any program.
Keyboard Shortcuts
[Alt] and [Esc] Switch between running applications
[Alt] and letter Select menu item by underlined letter
[Ctrl] and [Esc] Open Program Menu
[Ctrl] and [F4] Close active document or group windows (does not work with some applications)
[Alt] and [F4] Quit active application or close current window
[Alt] and [-] Open Control menu for active document
Ctrl] Lft., Rt. arrow Move cursor forward or back one word
Ctrl] Up, Down arrow Move cursor forward or back one paragraph
[F1] Open Help for active application
Windows+M Minimize all open windows
Shift+Windows+M Undo minimize all open windows
Windows+F1 Open Windows Help
Windows+Tab Cycle through the Taskbar buttons
Windows+Break Open the System Properties dialog box
acessability shortcuts
Right SHIFT for eight seconds........ Switch FilterKeys on and off.
Left ALT +left SHIFT +PRINT SCREEN....... Switch High Contrast on and off.
Left ALT +left SHIFT +NUM LOCK....... Switch MouseKeys on and off.
SHIFT....... five times Switch StickyKeys on and off.
NUM LOCK...... for five seconds Switch ToggleKeys on and off.
explorer shortcuts
END....... Display the bottom of the active window.
HOME....... Display the top of the active window.
NUM LOCK+ASTERISK....... on numeric keypad (*) Display all subfolders under the selected folder.
NUM LOCK+PLUS SIGN....... on numeric keypad (+) Display the contents of the selected folder.
NUM LOCK+MINUS SIGN....... on numeric keypad (-) Collapse the selected folder.
LEFT ARROW...... Collapse current selection if it's expanded, or select parent folder.
RIGHT ARROW....... Display current selection if it's collapsed, or select first subfolder.
Type the following commands in your Run Box (Windows Key + R) or Start Run
devmgmt.msc = Device Manager
msinfo32 = System Information
cleanmgr = Disk Cleanup
ntbackup = Backup or Restore Wizard (Windows Backup Utility)
mmc = Microsoft Management Console
excel = Microsoft Excel (If Installed)
msaccess = Microsoft Access (If Installed)
powerpnt = Microsoft PowerPoint (If Installed)
winword = Microsoft Word (If Installed)
frontpg = Microsoft FrontPage (If Installed)
notepad = Notepad
wordpad = WordPad
calc = Calculator
msmsgs = Windows Messenger
mspaint = Microsoft Paint
wmplayer = Windows Media Player
rstrui = System Restore
netscp6 = Netscape 6.x
netscp = Netscape 7.x
netscape = Netscape 4.x
waol = America Online
control = Opens the Control Panel
control printers = Opens the Printers Dialog
internetbrowser
type in u're adress "google", then press [Right CTRL] and [Enter]
add www. and .com to word and go to it
For Windows XP:
Copy. CTRL+C
Cut. CTRL+X
Paste. CTRL+V
Undo. CTRL+Z
Delete. DELETE
Delete selected item permanently without placing the item in the Recycle Bin. SHIFT+DELETE
Copy selected item. CTRL while dragging an item
Create shortcut to selected item. CTRL+SHIFT while dragging an item
Rename selected item. F2
Move the insertion point to the beginning of the next word. CTRL+RIGHT ARROW
Move the insertion point to the beginning of the previous word. CTRL+LEFT ARROW
Move the insertion point to the beginning of the next paragraph. CTRL+DOWN ARROW
Move the insertion point to the beginning of the previous paragraph. CTRL+UP ARROW
Highlight a block of text. CTRL+SHIFT with any of the arrow keys
Select more than one item in a window or on the desktop, or select text within a document. SHIFT with any of the arrow keys
Select all. CTRL+A
Search for a file or folder. F3
View properties for the selected item. ALT+ENTER
Close the active item, or quit the active program. ALT+F4
Opens the shortcut menu for the active window. ALT+SPACEBAR
Close the active document in programs that allow you to have multiple documents open simultaneously. CTRL+F4
Switch between open items. ALT+TAB
Cycle through items in the order they were opened. ALT+ESC
Cycle through screen elements in a window or on the desktop. F6
Display the Address bar list in My Computer or Windows Explorer. F4
Display the shortcut menu for the selected item. SHIFT+F10
Display the System menu for the active window. ALT+SPACEBAR
Display the Start menu. CTRL+ESC
Display the corresponding menu. ALT+Underlined letter in a menu name
Carry out the corresponding command. Underlined letter in a command name on an open menu
Activate the menu bar in the active program. F10
Open the next menu to the right, or open a submenu. RIGHT ARROW
Open the next menu to the left, or close a submenu. LEFT ARROW
Refresh the active window. F5
View the folder one level up in My Computer or Windows Explorer. BACKSPACE
Cancel the current task. ESC
SHIFT when you insert a CD into the CD-ROM drive Prevent the CD from automatically playing.
Use these keyboard shortcuts for dialog boxes:
To Press
Move forward through tabs. CTRL+TAB
Move backward through tabs. CTRL+SHIFT+TAB
Move forward through options. TAB
Move backward through options. SHIFT+TAB
Carry out the corresponding command or select the corresponding option. ALT+Underlined letter
Carry out the command for the active option or button. ENTER
Select or clear the check box if the active option is a check box. SPACEBAR
Select a button if the active option is a group of option buttons. Arrow keys
Display Help. F1
Display the items in the active list. F4
Open a folder one level up if a folder is selected in the Save As or Open dialog box. BACKSPACE
If you have a Microsoft Natural Keyboard, or any other compatible keyboard that includes the Windows logo key and the Application key , you can use these keyboard shortcuts:
Display or hide the Start menu. WIN Key
Display the System Properties dialog box. WIN Key+BREAK
Show the desktop. WIN Key+D
Minimize all windows. WIN Key+M
Restores minimized windows. WIN Key+Shift+M
Open My Computer. WIN Key+E
Search for a file or folder. WIN Key+F
Search for computers. CTRL+WIN Key+F
Display Windows Help. WIN Key+F1
Lock your computer if you are connected to a network domain, or switch users if you are not connected to a network domain. WIN Key+ L
Open the Run dialog box. WIN Key+R
Open Utility Manager. WIN Key+U
accessibility keyboard shortcuts:
Switch FilterKeys on and off. Right SHIFT for eight seconds
Switch High Contrast on and off. Left ALT+left SHIFT+PRINT SCREEN
Switch MouseKeys on and off. Left ALT +left SHIFT +NUM LOCK
Switch StickyKeys on and off. SHIFT five times
Switch ToggleKeys on and off. NUM LOCK for five seconds
Open Utility Manager. WIN Key+U
shortcuts you can use with Windows Explorer:
Display the bottom of the active window. END
Display the top of the active window. HOME
Display all subfolders under the selected folder. NUM LOCK+ASTERISK on numeric keypad (*)
Display the contents of the selected folder. NUM LOCK+PLUS SIGN on numeric keypad (+)
Collapse the selected folder. NUM LOCK+MINUS SIGN on numeric keypad (-)
Collapse current selection if it's expanded, or select parent folder. LEFT ARROW
Display current selection if it's collapsed, or select first subfolder. RIGHT ARROW
Change The Default Location For Installing Apps
Labels:
information,
registry,
windows xp,
xp facts
As the size of hard drives increase, more people are using partitions to separate and store groups of files.
XP uses the C:\Program Files directory as the default base directory into which new programs are installed. However, you can change the default installation drive and/ or directory by using a Registry hack.
Go to :-
- Start > Run
- Type “regedit” (without “” NOOBS!)
- Go to this directory…
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion
- Look for the value named ProgramFilesDir. by default,this value will be C:\Program Files. Edit the value to any valid drive or folder and XP will use that new location as the default installation directory for new programs.
XP uses the C:\Program Files directory as the default base directory into which new programs are installed. However, you can change the default installation drive and/ or directory by using a Registry hack.
Go to :-
- Start > Run
- Type “regedit” (without “” NOOBS!)
- Go to this directory…
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion
- Look for the value named ProgramFilesDir. by default,this value will be C:\Program Files. Edit the value to any valid drive or folder and XP will use that new location as the default installation directory for new programs.
How to: Convert Stubborn Webpage To .pdf
Labels:
information,
internet
I have come across some websites that i wanted to save the page for later review. I found that i was having some problems with certain sites. I found a way around it.
what you need:adobe acrobat 6 pro or better popupcop
There may be a simpler way to do this but i found that this works:
when at a webpage that you want to copy (YOU MUST BE USING IE AND HAVE BOTH POPUPCOP INSTALLED AND ADOBE ACROBAT 6 PRO OR HIGHER, ACROBAT ICON MUST BE IN IE TOOLBAR TO CONVERT TO .PDF), slide popupcops popup intensity bar to the far left, now click on adobe acrobat icon to convert webpage to .pdf document. I have yet to find a webpage where this trick does not work.
what you need:adobe acrobat 6 pro or better popupcop
There may be a simpler way to do this but i found that this works:
when at a webpage that you want to copy (YOU MUST BE USING IE AND HAVE BOTH POPUPCOP INSTALLED AND ADOBE ACROBAT 6 PRO OR HIGHER, ACROBAT ICON MUST BE IN IE TOOLBAR TO CONVERT TO .PDF), slide popupcops popup intensity bar to the far left, now click on adobe acrobat icon to convert webpage to .pdf document. I have yet to find a webpage where this trick does not work.
How to : Improve your torrent download speed
Labels:
computer facts,
computer science,
download,
information,
internet
Pear 2 Pear file sharing is one of the widely used technique in present. The Torrent search engine is the back bone for this context. As the young generation says “impatience is our trend”, means the generation can’t afford something slow.
Here are some tips which can really help to improve your download speed. Let’s have a quick glance at these tips.
1. Choose your ISP wisely
The basic rule is that the maximum Torrent download speed that you can get can’t cross the upper limit of the bandwidth provided by your ISP. Usually ISP’s specify the upload and download maximum for the connections. So it is always better to have an ISP who provides better Download and Upload limits for an affordable price.
2. Choose the right BitTorrent client
Always choose the latest versions among the available BitTorrent clients. mTorrent, Vuze etc are some of these latest versions available now. The latest versions are equipped with provisions for obtaining the highest download speed and an overall smooth downloading experience.
3. Check the seeds and peers
A peer is a computer which participates in the P2P sharing either for downloading or uploading. A seed is a computer who has got a complete copy of the file and is sharing that file in the network. A leech is a computer who doesn’t have a complete copy of the file, and is downloading the file at the moment. A leech becomes a seed when it completes the download and shares it over the network. It is always advisable to choose the files with more number of seeds and less no of leeches. That means the file with the highest seed to leech ratio.
4. Altering the firewall configuration
By default the firewalls block all the BitTorrent connections coming through. This can adversely affect the downloading speed. So you must make sure that your firewall is configured in such a way that it allows the BitTorrent connections through it. This can be done by checking the box ‘Add Windows Firewall Exception” in the firewall settings following the path options/preferences/connection. For ease some users may disable the firewall, but it is strongly advised that you shouldn’t disable your firewall that it will open your computer to serious threats.(
5. Limiting your upload rate
A peer to peer sharing is all about simultaneous upload and download. So every BitTorrent clients must upload some data at the same they are downloading some other data through torrent. For obtaining a high download speed you should vary your upload speed accordingly. Usually the upload maximum by the ISP is very much less than the download maximum. It is only 50Kbps for a 2Mbps connection. For fast downloading you can set your uploading speed to 80% of your maximum uploading speed. You must vary the speed as the download progresses for an efficient downloading. Keep the uploading limit maximum in the
beginning and then slightly decrease it as the download progresses. In mTorrent the upload limit can be set from the option Global Upload Rate.
6. Selecting a different port
The default port for the BitTorrent file sharing is one between 6881 and 6999. As BitTorrent sharing involves high bandwidth usage the ISP’s usually throttle traffic on these ports. So you can increase the downloading speed by selecting some port above 10000. Usually mTorrent randomly assign the port as the application starts. So set a specific port with a number above 10000, by disabling the Randomize port checkbox.
7. Increasing the number of Maximum Half Open TCP Connections
Usually the maximum no of half open TCP connections in Windows XP with SP2 is set as 10 for blocking the virus multiplication. But torrent needs more. To facilitate this a patch TCPIP.sys is available. Through this patch you can set the maximum no of open TCP connections. Set it to any number between 50 and 100.
8. Protocol encryption
Some ISP’s constrict the bandwidth for P2P sharing. Protocol encryption can be used to override this restriction. Check the Allow incoming legacy connections box and make the outgoing Encryption as Disabled for getting maximum speed on Torrent downloads. Between non-encryption is not advisable as it may lead to some encrypted client to be left as undiscovered.
9. Connections and bandwidth
The BitTorrent client you are using will allow you to enter values forGlobal maximum no of connections: It is the maximum no of connections BitTorrent client can make for any P2P sharing. Setting this no to a very high value will take up useless bandwidth, and to a very low value will miss out some peers. For a 256kbps connection you can set this number to 130.
Maximum no of connected peers per torrent: Set this no to one which is closer to the no of available peers for the file.
No of upload slots per torrent: It gives the maximum no of peers to which the BitTorrent client uploads at a time. Since a
low settings may affect the download set it to a moderate low value.
10. Miscellaneous
Disable the individual files for download along with a particular file, if we don’t want them at the beginning of download. Be familiar with your BitTorrent client settings from the users manual or web.
Here are some tips which can really help to improve your download speed. Let’s have a quick glance at these tips.
1. Choose your ISP wisely
The basic rule is that the maximum Torrent download speed that you can get can’t cross the upper limit of the bandwidth provided by your ISP. Usually ISP’s specify the upload and download maximum for the connections. So it is always better to have an ISP who provides better Download and Upload limits for an affordable price.2. Choose the right BitTorrent client
Always choose the latest versions among the available BitTorrent clients. mTorrent, Vuze etc are some of these latest versions available now. The latest versions are equipped with provisions for obtaining the highest download speed and an overall smooth downloading experience.
3. Check the seeds and peers
A peer is a computer which participates in the P2P sharing either for downloading or uploading. A seed is a computer who has got a complete copy of the file and is sharing that file in the network. A leech is a computer who doesn’t have a complete copy of the file, and is downloading the file at the moment. A leech becomes a seed when it completes the download and shares it over the network. It is always advisable to choose the files with more number of seeds and less no of leeches. That means the file with the highest seed to leech ratio.
4. Altering the firewall configuration
By default the firewalls block all the BitTorrent connections coming through. This can adversely affect the downloading speed. So you must make sure that your firewall is configured in such a way that it allows the BitTorrent connections through it. This can be done by checking the box ‘Add Windows Firewall Exception” in the firewall settings following the path options/preferences/connection. For ease some users may disable the firewall, but it is strongly advised that you shouldn’t disable your firewall that it will open your computer to serious threats.(
5. Limiting your upload rate
A peer to peer sharing is all about simultaneous upload and download. So every BitTorrent clients must upload some data at the same they are downloading some other data through torrent. For obtaining a high download speed you should vary your upload speed accordingly. Usually the upload maximum by the ISP is very much less than the download maximum. It is only 50Kbps for a 2Mbps connection. For fast downloading you can set your uploading speed to 80% of your maximum uploading speed. You must vary the speed as the download progresses for an efficient downloading. Keep the uploading limit maximum in the
beginning and then slightly decrease it as the download progresses. In mTorrent the upload limit can be set from the option Global Upload Rate.
6. Selecting a different port
The default port for the BitTorrent file sharing is one between 6881 and 6999. As BitTorrent sharing involves high bandwidth usage the ISP’s usually throttle traffic on these ports. So you can increase the downloading speed by selecting some port above 10000. Usually mTorrent randomly assign the port as the application starts. So set a specific port with a number above 10000, by disabling the Randomize port checkbox.
7. Increasing the number of Maximum Half Open TCP Connections
Usually the maximum no of half open TCP connections in Windows XP with SP2 is set as 10 for blocking the virus multiplication. But torrent needs more. To facilitate this a patch TCPIP.sys is available. Through this patch you can set the maximum no of open TCP connections. Set it to any number between 50 and 100.
8. Protocol encryption
Some ISP’s constrict the bandwidth for P2P sharing. Protocol encryption can be used to override this restriction. Check the Allow incoming legacy connections box and make the outgoing Encryption as Disabled for getting maximum speed on Torrent downloads. Between non-encryption is not advisable as it may lead to some encrypted client to be left as undiscovered.
9. Connections and bandwidth
The BitTorrent client you are using will allow you to enter values forGlobal maximum no of connections: It is the maximum no of connections BitTorrent client can make for any P2P sharing. Setting this no to a very high value will take up useless bandwidth, and to a very low value will miss out some peers. For a 256kbps connection you can set this number to 130.
Maximum no of connected peers per torrent: Set this no to one which is closer to the no of available peers for the file.
No of upload slots per torrent: It gives the maximum no of peers to which the BitTorrent client uploads at a time. Since a
low settings may affect the download set it to a moderate low value.
10. Miscellaneous
Disable the individual files for download along with a particular file, if we don’t want them at the beginning of download. Be familiar with your BitTorrent client settings from the users manual or web.
Win XP: Use of WIN key
Labels:
computer facts,
computer science,
windows xp,
xp facts
The Windows logo key, located in the bottom row of most computer keyboards is a little-used treasure. Don''t ignore it. It is the shortcut anchor for the following commands:
Windows: Display the Start menu
Windows + D: Minimize or restore all windows
Windows + E: Display Windows Explorer
Windows + F: Display Search for files
Windows + Ctrl + F: Display Search for computer
Windows + F1: Display Help and Support Center
Windows + R: Display Run dialog box
Windows + break: Display System Properties dialog box
Windows + shift + M: Undo minimize all windows
Windows + L: Lock the workstation
Windows + U: Open Utility Manager
Windows + Q: Quick switching of users (Powertoys only)
Windows + Q: Hold Windows Key, then tap Q to scroll thru the different users on your pc
Windows: Display the Start menu
Windows + D: Minimize or restore all windows
Windows + E: Display Windows Explorer
Windows + F: Display Search for files
Windows + Ctrl + F: Display Search for computer
Windows + F1: Display Help and Support Center
Windows + R: Display Run dialog box
Windows + break: Display System Properties dialog box
Windows + shift + M: Undo minimize all windows
Windows + L: Lock the workstation
Windows + U: Open Utility Manager
Windows + Q: Quick switching of users (Powertoys only)
Windows + Q: Hold Windows Key, then tap Q to scroll thru the different users on your pc
Save your files when your computer crashes
Labels:
computer facts,
computer science,
crash,
hacking,
windows xp,
xp facts
First thing to keep in mind: If your computer hasn't crashed yet, it will in the future! So instead of waiting for fate to strike, take some precautions now:
1) BACK-UP! Buy some decent DVD-R discs and put everything useful in them. When you have more useful stuff, backup again. Do this often.
2) Keep your computer healthy. Use an antivirus, an anti-spy, and a firewall. Keep them updated. Check regularly for Windows critical fixes.
3) Don't install software that would do dangerous things to your hard drive. A boot manager would fall in this category.
4) Use a registry cleaner before and after you install or uninstall any software. Many of the problems that will keep Windows from booting are caused by sloppy software that mess up your registry. A good registry cleaner is Tune-up Utilities.
Code:
http://www.tune-up.com/
5) Run chkdsk now and then. Go to Start> Run. Type chkdsk /F. Press enter.
In case your PC has already crashed, read the following:
Most important: Don't panic! Panic is like a little demon that whispers in your ear to format your hard drive and reinstall everything. Don't do it!
You will lose all your data and the little demon will laugh at you.
To be exact you can still recover your data if you format your drive (by using special software), but only if you don't write anything
on the disc afterwards. In other words format + windows install = bad idea. If you reinstall windows without formating your drive, you will
only lose the files on your desktop and "My Documents" folder.
In all occasions you should make sure to safeguard your files before attempting any kind of repair!
So let's go about how to do that:
The fast way: Go to this site:
Code:
http://www.knoppix.org
. Knoppix is a Linux distribution than runs from a CD. Download the Knoppix ISO and burn it. Put it in your CD drive. On startup access BIOS and change
the boot sequence so that your computer boots from the CD drive. Save settings and exit. Upon reboot, Knoppix will load.
Knoppix is much like windows and it comes with its own CD burner. Locate it, launch it and backup everything you want on CD.
Now you don't have to worry anymore!
The less fast way: This requires that you have access to a second PC. Open the case of your computer and remove the hard disk.
Install it as a slave on the second PC.
Depending on respective configurations, you may have to change some jumper settings on the drive. Read the manual for help with installing hard drives
and setting jumpers.
After this is done, boot the second PC. If everything went out ok, you should be able to access your drive without problems. (Edit: Note that Win98
cannot recognize a local NTFS (Win2K/XP) disk.)
Copy everything you need from your own hard drive to the other one. Now you don't have to worry anymore!
Replace your computer's hard disk, fix all problems and reverse the process to copy the data back to your computer, or take CD backups on the other PC.
1) BACK-UP! Buy some decent DVD-R discs and put everything useful in them. When you have more useful stuff, backup again. Do this often.
2) Keep your computer healthy. Use an antivirus, an anti-spy, and a firewall. Keep them updated. Check regularly for Windows critical fixes.
3) Don't install software that would do dangerous things to your hard drive. A boot manager would fall in this category.
4) Use a registry cleaner before and after you install or uninstall any software. Many of the problems that will keep Windows from booting are caused by sloppy software that mess up your registry. A good registry cleaner is Tune-up Utilities.
Code:
http://www.tune-up.com/
5) Run chkdsk now and then. Go to Start> Run. Type chkdsk /F. Press enter.
In case your PC has already crashed, read the following:
Most important: Don't panic! Panic is like a little demon that whispers in your ear to format your hard drive and reinstall everything. Don't do it!
You will lose all your data and the little demon will laugh at you.
To be exact you can still recover your data if you format your drive (by using special software), but only if you don't write anything
on the disc afterwards. In other words format + windows install = bad idea. If you reinstall windows without formating your drive, you will
only lose the files on your desktop and "My Documents" folder.
In all occasions you should make sure to safeguard your files before attempting any kind of repair!
So let's go about how to do that:
The fast way: Go to this site:
Code:
http://www.knoppix.org
. Knoppix is a Linux distribution than runs from a CD. Download the Knoppix ISO and burn it. Put it in your CD drive. On startup access BIOS and change
the boot sequence so that your computer boots from the CD drive. Save settings and exit. Upon reboot, Knoppix will load.
Knoppix is much like windows and it comes with its own CD burner. Locate it, launch it and backup everything you want on CD.
Now you don't have to worry anymore!
The less fast way: This requires that you have access to a second PC. Open the case of your computer and remove the hard disk.
Install it as a slave on the second PC.
Depending on respective configurations, you may have to change some jumper settings on the drive. Read the manual for help with installing hard drives
and setting jumpers.
After this is done, boot the second PC. If everything went out ok, you should be able to access your drive without problems. (Edit: Note that Win98
cannot recognize a local NTFS (Win2K/XP) disk.)
Copy everything you need from your own hard drive to the other one. Now you don't have to worry anymore!
Replace your computer's hard disk, fix all problems and reverse the process to copy the data back to your computer, or take CD backups on the other PC.
Windows XP: Error reporting
Labels:
computer facts,
computer science,
facts,
windows xp,
xp facts
To disable the stupid feature in WinXP which tries to send a report to Microsoft every time a program crashes you will have to do this:
Open Control Panel
Click on Preformance and Maintenance.
Click on System.
Then click on the Advanced tab
Click on the error reporting button on the bottom of the windows.
Select Disable error reporting.
Click OK
Click OK
Open Control Panel
Click on Preformance and Maintenance.
Click on System.
Then click on the Advanced tab
Click on the error reporting button on the bottom of the windows.
Select Disable error reporting.
Click OK
Click OK
Win XP: Disable Compression, NTFS partition, Disk Cleanup
Labels:
computer facts,
computer science,
registry,
windows xp,
xp facts
On an NTFS partition, Disk Cleanup can compress old files
to save space. But calculating the savings and performing
the compression often take a long time, and on some systems,
Disk Cleanup hangs during the process. If that happens, or if
you don't care to wait, use this Registry tweak to disable the
compression: Delete the key
HKEY_ LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\ CurrentVersion\Explorer\VolumeCaches\Compress Old Files.
to save space. But calculating the savings and performing
the compression often take a long time, and on some systems,
Disk Cleanup hangs during the process. If that happens, or if
you don't care to wait, use this Registry tweak to disable the
compression: Delete the key
HKEY_ LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\ CurrentVersion\Explorer\VolumeCaches\Compress Old Files.
Windows XP: Password Hack
Labels:
computer facts,
computer science,
hacking,
windows xp,
xp facts
Because of the security features built into Windows XP, it is virtually impossible to get back into the system without the password. You have several options to try and get around this problem.
If you have access to another user account with administrator rights, you can use that account to change the password of the account that is locked out. You can also use the default Administrator account that is built into Windows XP.
First you need to boot the system into Safe Mode.
1.Restart your system.
2.When you see the blue Dell globe or screen, press the ( F8 ) key about 3 times a second.
3.You should get the Windows startup menu. Use the (Up or Down) arrow keys to highlight (SafeMode)
4.Press (Enter) on (Safe Mode), then press (Enter) on (Windows XP).
5.The system should boot to Safe Mode.
Once you are at the Account Log on Screen, click on the icon
for the user account with administrator rights, or click on the icon
for the administrators account.
Note: For Home the Administrator account isn't normally shown & in Safe Mode you have to press Ctrl+Alt+Delete keys twice to show.
For PRO you can do this in normal mode
When the system has booted to the desktop, use the following steps to change the accounts password.
1.Click Start, Control Panel, Administrative Tools.
2.Click Computer Management.
3.Double click Local Users and Groups, double click the folder Users.
4.Right click on the account name that is locked out, and click on Set Password.
5.You may get a warning message about changing the password, simply click proceed.
6.Leave the New Password box blank, also leave the Confirm Password box blank.
7.Click OK, and OK again.
8.Then close all Windows, reboot the system and try to log in.
There are also applications that can recover the password for you.
The following companies provide these applications at a cost.
iOpus® Password Recovery XP here.
LostPassword.com, here.
Asterisk Password Recovery XP v1.89 here.
Windows XP / 2000 / NT Key here.
If the above information does not help in recovering the password, the only option left is to
format the hard drive then reinstall Windows and the system software.
If you have access to another user account with administrator rights, you can use that account to change the password of the account that is locked out. You can also use the default Administrator account that is built into Windows XP.
First you need to boot the system into Safe Mode.
1.Restart your system.
2.When you see the blue Dell globe or screen, press the ( F8 ) key about 3 times a second.
3.You should get the Windows startup menu. Use the (Up or Down) arrow keys to highlight (SafeMode)
4.Press (Enter) on (Safe Mode), then press (Enter) on (Windows XP).
5.The system should boot to Safe Mode.
Once you are at the Account Log on Screen, click on the icon
for the user account with administrator rights, or click on the icon
for the administrators account.
Note: For Home the Administrator account isn't normally shown & in Safe Mode you have to press Ctrl+Alt+Delete keys twice to show.
For PRO you can do this in normal mode
When the system has booted to the desktop, use the following steps to change the accounts password.
1.Click Start, Control Panel, Administrative Tools.
2.Click Computer Management.
3.Double click Local Users and Groups, double click the folder Users.
4.Right click on the account name that is locked out, and click on Set Password.
5.You may get a warning message about changing the password, simply click proceed.
6.Leave the New Password box blank, also leave the Confirm Password box blank.
7.Click OK, and OK again.
8.Then close all Windows, reboot the system and try to log in.
There are also applications that can recover the password for you.
The following companies provide these applications at a cost.
iOpus® Password Recovery XP here.
LostPassword.com, here.
Asterisk Password Recovery XP v1.89 here.
Windows XP / 2000 / NT Key here.
If the above information does not help in recovering the password, the only option left is to
format the hard drive then reinstall Windows and the system software.
What is: Band width
Labels:
Basics,
computer facts,
facts,
information,
internet
Band Width Explained
Most hosting companies offer a variety of bandwidth options in their plans. So exactly what is bandwidth as it relates to web hosting? Put simply, bandwidth is the amount of traffic that is allowed to occur between your web site and the rest of the internet. The amount of bandwidth a hosting company can provide is determined by their network connections, both internal to their data center and external to the public internet.
Network Connectivity
The internet, in the most simplest of terms, is a group of millions of computers connected by networks. These
connections within the internet can be large or small depending upon the cabling and equipment that is used at a particular internet location. It is the size of each network connection that determines how much bandwidth is available. For example, if you use a DSL connection to connect to the internet, you have 1.54 Mega bits (Mb) of bandwidth. Bandwidth therefore is measured in bits (a single 0 or 1). Bits are grouped in bytes which form words, text, and other information that is transferred between your computer and the internet.
If you have a DSL connection to the internet, you have dedicated bandwidth between your computer and your internet provider. But your internet provider may have thousands of DSL connections to their location. All of these connection aggregate at your internet provider who then has their own dedicated connection to the internet (or multiple connections) which is much larger than your single connection. They must have enough bandwidth to serve your computing needs as well as all of their other customers. So while you have a 1.54Mb connection to your internet provider, your internet provider may have a 255Mb connection to the internet so it can accommodate your needs and up to 166 other users (255/1.54).
Traffic
A very simple analogy to use to understand bandwidth and traffic is to think of highways and cars. Bandwidth is the number of lanes on the highway and traffic is the number of cars on the highway. If you are the only car on a highway, you can travel very quickly. If you are stuck in the middle of rush hour, you may travel very slowly since all of the lanes are being used up.
Traffic is simply the number of bits that are transferred on network connections. It is easiest to understand traffic using examples. One Gigabyte is 2 to the 30th power (1,073,741,824) bytes. One gigabyte is equal to 1,024 megabytes. To put this in perspective, it takes one byte to store one character. Imagine 100 file cabinets in a building, each of these cabinets holds 1000 folders. Each folder has 100 papers. Each paper contains 100 characters - A GB is all the characters in the building. An MP3 song is about 4MB, the same song in wav format is about 40MB, a full length movie can be 800MB to 1000MB (1000MB = 1GB).
If you were to transfer this MP3 song from a web site to your computer, you would create 4MB of traffic between the web site you are downloading from and your computer. Depending upon the network connection between the web site and the internet, the transfer may occur very quickly, or it could take time if other people are also downloading files at the same time. If, for example, the web site you download from has a 10MB connection to the internet, and you are the only person accessing that web site to download your MP3, your 4MB file will be the only traffic on that web site. However, if three people are all downloading that same MP at the same time, 12MB (3 x 4MB) of traffic has been created. Because in this example, the host only has 10MB of bandwidth, someone will have to wait. The network equipment at the hosting company will cycle through each person downloading the file and transfer a small portion at a time so each person's file transfer can take place, but the transfer for everyone downloading the file will be slower. If 100 people all came to the site and downloaded the MP3 at the same time, the transfers would be extremely slow. If the host wanted to decrease the time it took to download files simultaneously, it could increase the bandwidth of their internet connection (at a cost due to upgrading equipment).
Hosting Bandwidth
In the example above, we discussed traffic in terms of downloading an MP3 file. However, each time you visit a web site, you are creating traffic, because in order to view that web page on your computer, the web page is first downloaded to your computer (between the web site and you) which is then displayed using your browser software (Internet Explorer, Netscape, etc.) . The page itself is simply a file that creates traffic just like the MP3 file in the example above (however, a web page is usually much smaller than a music file).
A web page may be very small or large depending upon the amount of text and the number and quality of images integrated within the web page. For example, the home page for CNN.com is about 200KB (200 Kilobytes = 200,000 bytes = 1,600,000 bits). This is typically large for a web page. In comparison, Yahoo's home page is about 70KB.
How Much Bandwidth Is Enough?
It depends (don't you hate that answer). But in truth, it does. Since bandwidth is a significant determinant of hosting plan prices, you should take time to determine just how much is right for you. Almost all hosting plans have bandwidth requirements measured in months, so you need to estimate the amount of bandwidth that will be required by your site on a monthly basis
If you do not intend to provide file download capability from your site, the formula for calculating bandwidth is fairly straightforward:
Average Daily Visitors x Average Page Views x Average Page Size x 31 x Fudge Factor
If you intend to allow people to download files from your site, your bandwidth calculation should be:
[(Average Daily Visitors x Average Page Views x Average Page Size) +
(Average Daily File Downloads x Average File Size)] x 31 x Fudge Factor
Let us examine each item in the formula:
Average Daily Visitors - The number of people you expect to visit your site, on average, each day. Depending upon how you market your site, this number could be from 1 to 1,000,000.
Average Page Views - On average, the number of web pages you expect a person to view. If you have 50 web pages in your web site, an average person may only view 5 of those pages each time they visit.
Average Page Size - The average size of your web pages, in Kilobytes (KB). If you have already designed your site, you can calculate this directly.
Average Daily File Downloads - The number of downloads you expect to occur on your site. This is a function of the numbers of visitors and how many times a visitor downloads a file, on average, each day.
Average File Size - Average file size of files that are downloadable from your site. Similar to your web pages, if you already know which files can be downloaded, you can calculate this directly.
Fudge Factor - A number greater than 1. Using 1.5 would be safe, which assumes that your estimate is off by 50%. However, if you were very unsure, you could use 2 or 3 to ensure that your bandwidth requirements are more than met.
Usually, hosting plans offer bandwidth in terms of Gigabytes (GB) per month. This is why our formula takes daily averages and multiplies them by 31.
Summary
Most personal or small business sites will not need more than 1GB of bandwidth per month. If you have a web site that is composed of static web pages and you expect little traffic to your site on a daily basis, go with a low bandwidth plan. If you go over the amount of bandwidth allocated in your plan, your hosting company could charge you over usage fees, so if you think the traffic to your site will be significant, you may want to go through the calculations above to estimate the amount of bandwidth required in a hosting plan.
Most hosting companies offer a variety of bandwidth options in their plans. So exactly what is bandwidth as it relates to web hosting? Put simply, bandwidth is the amount of traffic that is allowed to occur between your web site and the rest of the internet. The amount of bandwidth a hosting company can provide is determined by their network connections, both internal to their data center and external to the public internet.
Network Connectivity
The internet, in the most simplest of terms, is a group of millions of computers connected by networks. These
connections within the internet can be large or small depending upon the cabling and equipment that is used at a particular internet location. It is the size of each network connection that determines how much bandwidth is available. For example, if you use a DSL connection to connect to the internet, you have 1.54 Mega bits (Mb) of bandwidth. Bandwidth therefore is measured in bits (a single 0 or 1). Bits are grouped in bytes which form words, text, and other information that is transferred between your computer and the internet.If you have a DSL connection to the internet, you have dedicated bandwidth between your computer and your internet provider. But your internet provider may have thousands of DSL connections to their location. All of these connection aggregate at your internet provider who then has their own dedicated connection to the internet (or multiple connections) which is much larger than your single connection. They must have enough bandwidth to serve your computing needs as well as all of their other customers. So while you have a 1.54Mb connection to your internet provider, your internet provider may have a 255Mb connection to the internet so it can accommodate your needs and up to 166 other users (255/1.54).
Traffic
A very simple analogy to use to understand bandwidth and traffic is to think of highways and cars. Bandwidth is the number of lanes on the highway and traffic is the number of cars on the highway. If you are the only car on a highway, you can travel very quickly. If you are stuck in the middle of rush hour, you may travel very slowly since all of the lanes are being used up.
Traffic is simply the number of bits that are transferred on network connections. It is easiest to understand traffic using examples. One Gigabyte is 2 to the 30th power (1,073,741,824) bytes. One gigabyte is equal to 1,024 megabytes. To put this in perspective, it takes one byte to store one character. Imagine 100 file cabinets in a building, each of these cabinets holds 1000 folders. Each folder has 100 papers. Each paper contains 100 characters - A GB is all the characters in the building. An MP3 song is about 4MB, the same song in wav format is about 40MB, a full length movie can be 800MB to 1000MB (1000MB = 1GB).
If you were to transfer this MP3 song from a web site to your computer, you would create 4MB of traffic between the web site you are downloading from and your computer. Depending upon the network connection between the web site and the internet, the transfer may occur very quickly, or it could take time if other people are also downloading files at the same time. If, for example, the web site you download from has a 10MB connection to the internet, and you are the only person accessing that web site to download your MP3, your 4MB file will be the only traffic on that web site. However, if three people are all downloading that same MP at the same time, 12MB (3 x 4MB) of traffic has been created. Because in this example, the host only has 10MB of bandwidth, someone will have to wait. The network equipment at the hosting company will cycle through each person downloading the file and transfer a small portion at a time so each person's file transfer can take place, but the transfer for everyone downloading the file will be slower. If 100 people all came to the site and downloaded the MP3 at the same time, the transfers would be extremely slow. If the host wanted to decrease the time it took to download files simultaneously, it could increase the bandwidth of their internet connection (at a cost due to upgrading equipment).
Hosting Bandwidth
In the example above, we discussed traffic in terms of downloading an MP3 file. However, each time you visit a web site, you are creating traffic, because in order to view that web page on your computer, the web page is first downloaded to your computer (between the web site and you) which is then displayed using your browser software (Internet Explorer, Netscape, etc.) . The page itself is simply a file that creates traffic just like the MP3 file in the example above (however, a web page is usually much smaller than a music file).
A web page may be very small or large depending upon the amount of text and the number and quality of images integrated within the web page. For example, the home page for CNN.com is about 200KB (200 Kilobytes = 200,000 bytes = 1,600,000 bits). This is typically large for a web page. In comparison, Yahoo's home page is about 70KB.
How Much Bandwidth Is Enough?
It depends (don't you hate that answer). But in truth, it does. Since bandwidth is a significant determinant of hosting plan prices, you should take time to determine just how much is right for you. Almost all hosting plans have bandwidth requirements measured in months, so you need to estimate the amount of bandwidth that will be required by your site on a monthly basis
If you do not intend to provide file download capability from your site, the formula for calculating bandwidth is fairly straightforward:
Average Daily Visitors x Average Page Views x Average Page Size x 31 x Fudge Factor
If you intend to allow people to download files from your site, your bandwidth calculation should be:
[(Average Daily Visitors x Average Page Views x Average Page Size) +
(Average Daily File Downloads x Average File Size)] x 31 x Fudge Factor
Let us examine each item in the formula:
Average Daily Visitors - The number of people you expect to visit your site, on average, each day. Depending upon how you market your site, this number could be from 1 to 1,000,000.
Average Page Views - On average, the number of web pages you expect a person to view. If you have 50 web pages in your web site, an average person may only view 5 of those pages each time they visit.
Average Page Size - The average size of your web pages, in Kilobytes (KB). If you have already designed your site, you can calculate this directly.
Average Daily File Downloads - The number of downloads you expect to occur on your site. This is a function of the numbers of visitors and how many times a visitor downloads a file, on average, each day.
Average File Size - Average file size of files that are downloadable from your site. Similar to your web pages, if you already know which files can be downloaded, you can calculate this directly.
Fudge Factor - A number greater than 1. Using 1.5 would be safe, which assumes that your estimate is off by 50%. However, if you were very unsure, you could use 2 or 3 to ensure that your bandwidth requirements are more than met.
Usually, hosting plans offer bandwidth in terms of Gigabytes (GB) per month. This is why our formula takes daily averages and multiplies them by 31.
Summary
Most personal or small business sites will not need more than 1GB of bandwidth per month. If you have a web site that is composed of static web pages and you expect little traffic to your site on a daily basis, go with a low bandwidth plan. If you go over the amount of bandwidth allocated in your plan, your hosting company could charge you over usage fees, so if you think the traffic to your site will be significant, you may want to go through the calculations above to estimate the amount of bandwidth required in a hosting plan.
Facts: The Brain
Labels:
biological facts,
brain,
facts,
human facts,
information
The human brain is the most complex and least understood part of the human anatomy. There may be a lot we don’t know, but here are a few interesting facts that we’ve got covered.
1. Nerve impulses to and from the brain travel as fast as 170 miles per hour. Ever wonder how you can react so fast to things around you or why that stubbed toe hurts right away? It’s due to the super speedy movement of nerve impulses from your brain to the rest of your body and vice versa, bringing reactions at the speed of a high powered luxury sports car.
2. The brain operates on the same amount of power as 10watt light bulb. The cartoon image of a light bulb over your head when a great thought occurs isn’t too far off the mark. Your brain generates as much energy as a small light bulb even when you’re sleeping.
3. The human brain cell can hold 5 times as much information as the Encyclopedia Britannica. Or any other encyclopedia for that matter. Scientists have yet to settle on a definitive amount, but the storage capacity of the brain in electronic terms is thought to
be between 3 or even 1,000 terabytes. The National Archives of Britain, containing over
900 years of history, only takes up 70 terabytes, making your brain’s memory power
pretty darn impressive.
4. Your brain uses 20% of the oxygen that enters your bloodstream. The brain only makes up about 2% of our body mass, yet consumes more oxygen than any other organ in the body, making it extremely susceptible to damage related to oxygen deprivation. So breathe deep to keep your brain happy and swimming in oxygenated cells.
5. The brain is much more active at night than during the day. Logically, you would think that all the moving around, complicated calculations and tasks and general interaction we do on a daily basis during our working hours would take a lot more brain power than, say, lying in bed. Turns out, the opposite is true. When you turn off your brain turns on. Scientists don’t yet know why this is but you can thank the hard work of your brain while you sleep for all those pleasant dreams.
6. Scientists say the higher your I.Q. the more you dream. While this may be true, don’t take it as a sign you’re mentally lacking if you can’t recall your dreams. Most of us don’t remember many of our dreams and the average length of most dreams is only 23 seconds–barely long enough to register.
7. Neurons continue to grow throughout human life. For years scientists and doctors thought that brain and neural tissue couldn’t grow or regenerate. While it doesn’t act in the same manner as tissues in many other parts of the body, neurons can and do grow throughout your life, adding a whole new dimension to the study of the brain and the illnesses that affect it.
8. Information travels at different speeds within different types of neurons. Not all neurons are the same. There are a few different types within the body and transmission along these different kinds can be as slow as 0.5 meters/sec or as fast as 120 meters/sec.
9. The brain itself cannot feel pain. While the brain might be the pain center when you cut your finger or burn yourself, the brain itself does not have pain receptors and cannot feel pain. That doesn’t mean your head can’t hurt. The brain is surrounded by loads of tissues, nerves and blood vessels that are plenty receptive to pain and can give you a pounding headache.
10. 80% of the brain is water. Your brain isn’t the firm, gray mass you’ve seen on TV. Living brain tissue is a squishy, pink and jellylike organ thanks to the loads of blood and high water content of the tissue. So the next time you’re feeling dehydrated get a drink to keep your brain hydrated.
1. Nerve impulses to and from the brain travel as fast as 170 miles per hour. Ever wonder how you can react so fast to things around you or why that stubbed toe hurts right away? It’s due to the super speedy movement of nerve impulses from your brain to the rest of your body and vice versa, bringing reactions at the speed of a high powered luxury sports car.
2. The brain operates on the same amount of power as 10watt light bulb. The cartoon image of a light bulb over your head when a great thought occurs isn’t too far off the mark. Your brain generates as much energy as a small light bulb even when you’re sleeping.
3. The human brain cell can hold 5 times as much information as the Encyclopedia Britannica. Or any other encyclopedia for that matter. Scientists have yet to settle on a definitive amount, but the storage capacity of the brain in electronic terms is thought to
be between 3 or even 1,000 terabytes. The National Archives of Britain, containing over
900 years of history, only takes up 70 terabytes, making your brain’s memory power
pretty darn impressive.
4. Your brain uses 20% of the oxygen that enters your bloodstream. The brain only makes up about 2% of our body mass, yet consumes more oxygen than any other organ in the body, making it extremely susceptible to damage related to oxygen deprivation. So breathe deep to keep your brain happy and swimming in oxygenated cells.
5. The brain is much more active at night than during the day. Logically, you would think that all the moving around, complicated calculations and tasks and general interaction we do on a daily basis during our working hours would take a lot more brain power than, say, lying in bed. Turns out, the opposite is true. When you turn off your brain turns on. Scientists don’t yet know why this is but you can thank the hard work of your brain while you sleep for all those pleasant dreams.
6. Scientists say the higher your I.Q. the more you dream. While this may be true, don’t take it as a sign you’re mentally lacking if you can’t recall your dreams. Most of us don’t remember many of our dreams and the average length of most dreams is only 23 seconds–barely long enough to register.
7. Neurons continue to grow throughout human life. For years scientists and doctors thought that brain and neural tissue couldn’t grow or regenerate. While it doesn’t act in the same manner as tissues in many other parts of the body, neurons can and do grow throughout your life, adding a whole new dimension to the study of the brain and the illnesses that affect it.
8. Information travels at different speeds within different types of neurons. Not all neurons are the same. There are a few different types within the body and transmission along these different kinds can be as slow as 0.5 meters/sec or as fast as 120 meters/sec.
9. The brain itself cannot feel pain. While the brain might be the pain center when you cut your finger or burn yourself, the brain itself does not have pain receptors and cannot feel pain. That doesn’t mean your head can’t hurt. The brain is surrounded by loads of tissues, nerves and blood vessels that are plenty receptive to pain and can give you a pounding headache.
10. 80% of the brain is water. Your brain isn’t the firm, gray mass you’ve seen on TV. Living brain tissue is a squishy, pink and jellylike organ thanks to the loads of blood and high water content of the tissue. So the next time you’re feeling dehydrated get a drink to keep your brain hydrated.
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