What are the uses of these keys on keyboard?

Question

F1 to F12, Print Screen, Scroll Lock, Pause, Insert, Num Lock.

Plz tell.

Answer 1

Most computer keyboards have a row of Function keys at the top of the keyboard. These keys are marked F1 through F10 or F12. While they were widely used with older DOS programs, they are not as popular today. However many programs, including most of Microsoft's products, support use of the function keys. As a throwback to DOS days, you will find that the F1 key will often bring up a help menu. The function keys are frequently used in combination with other keys such as the CTRL key, the ALT key, and the Shift key. This results in a plethora of possible keyboard shortcuts. Look in the help menu of the program that you are using to find a list of the function keys and their uses.

In the old DOS days, the Print Screen key on a PC keyboard performed just as you would expect. When the Print Screen key was pressed, a paper copy of whatever was on the screen was printed. Unfortunately in Windows the Print Screen key sends an image of the screen to the Windows Clipboard instead of the printer. In order to actually print the screen image, you must then paste that image in the Clipboard into a program, like a paint program, and print the screen from that program. (On some keyboards you have to hold down the Shift key while pressing the Print Screen key.)

Scroll Lock is a toggle key that changes the effect of the cursor movement keys. In most current programs the Scroll Lock key is disabled and pressing it has no effect. In programs that support this key, when the Scroll Lock key is on, pressing the arrow keys makes the display appear to scroll while the cursor stays in its original position. When the Scroll Lock key is off, the cursor moves as far as it can before the display starts scrolling.

Pause/Break

This key was previously used in programming and debugging applications. In most current programs, it is non-functioning.

The Insert key is found only on PC keyboards. It is a toggle key that determines what happens when you type new characters within an existing line of text or numbers. When the Insert key is on, the new text that you type is inserted at the cursor location and the text already in place is moved to the right. When the Insert key is off, new text overwrites the text that is on the screen to the right of the cursor. There is usually no visual indication of whether the Insert key is on or off.

Num Lock & Numeric Keypad

Many, but not all, computer keyboards have a numeric keypad usually located on the right side of the keyboard. This keypad has a group of number keys with additional markings like arrows, PgDn, End, etc. The numeric pad is controlled by a toggle key marked Num Lock. When the Num Lock key is on, this pad can be used to enter numbers. When the Num Lock key is off, the functions listed below the number will be activated. These functions usually include arrow keys that can be used to move the cursor around the screen. Likewise the keys marked PgUp and Pg Down will move the cursor a page up or down on the screen. The Home and End keys will move the cursor to the beginning or end of a line or document, respectively.

Numeric keypads often include other keys as well. Many include useful symbols such as the period, slash, and plus and minus signs. The Macintosh keyboard includes a Clear key that can be used in many programs to clear or undo the last number that you typed. You may also find a helpful Help key on a Macintosh numeric keypad.

Answer 2

F1-F12 can be defined by a program. Common uses:
F1 is help most of the time.
F5 during start up sometimes goes into the BIOS (most use Esc)
F8 during start up will give you startup options such as "Safe Mode"
F12 during start up often gives you a menu to pick the start up disk. Useful to boot to a CD-ROM

Print Screen: Ctrl + Print Screen copies a picture of the whole screen to the Clipboard Alt+Print Screen copies a picture of the active Window to the Clipboard. You can paste it into any app that you can put a picture in

Scroll Lock is rarely used but it can change the behavior of the arrow keys in a program

Pause/Break used to stop the executing program. It is mostly out of date now.

Insert changes the Overtype/Insert mode in some programs (Like Word)

NumLock: sets rather the number pad is numbers or arrows (and other commands) that control the cursor.

Answer 3

Press print screen and it places your current desktop into the clipboard so you can insert it into a program such as a graphic program

Scroll lock in the days of DOS kept you screen from scrolling during a long list. That way the top line(s) did not get pushed off the top of the screen. Rarely used today. But I have a couple programs that use it for special function, like switching between two screens in a program

Pause. Again from DOS days. Pause a program. Not used much today

Insert. DOS again. Allowed you to insert letters into a line of text. Today most word processors use it to switch between whether your typing inserts letter or overwites letters.

Num Lock. Changes the keys on you number pad between whether they type numbers or move the cursor

F1 to F12 have no use in Windows. But they are available for people who want to program them to do something within a program that they write. I have a couple programs that use them. They were used on a lot of DOS programs before you could creates buttons to click to do things. You pressed a Function (Fx) key instead.

Answer 4

F1 - F12 are the function keys
F1 - Help Key
F2 - Rename
F5 - Refresh
F6 - Highlight the Address bar in IE
F10 - Menu
F11 - Maximizing The Screen
PRINT SCREEN - Its use to take the print of screen and can be pasted in MSPAINT
NUM LOCK - Is used to lock/unlock the keypads

Answer 5

most F (function) keys were used with word processors
or other programs for special functions.
some are still used by windows but different manufacturers map them to do what they want them to do, so the keys are not standard on every computer.


If you have a microsoft compatible keyboard there is a key on the bottom with the M/S logo on it.
if you press it and "M" at the same time it will
minimize all open windows to the bottom toolbar.
This is handy for privacy purposes when someone walks into the room.

The Print Scn key if you press the shift key and it at the same time it will capture a image of your whole screen and then you can use your paste function in a image program to make a picture of what you had on the screen.
It is left over from the old MSdos days when it would
actually send your screen to the printer.

Answer 6

Can be used in various programs. They have no specific use.

Print Screen = To do an image capture of your screen, try it, press print screen, go to paint, click paste, and wala!
Num Lock = The obvious, a lock for your num keypad.

Answer 7

The pause/break + Windows Key brings up the system properties window

Answer 8

Num lock makes it to where you can use the key pad of #'s on the side

Answer 9

print screen takes a picture of the screen you have it on when you press the button i dont know what the rest are for.

Answer 10

f2-rename
alt+f4 close a window/turn off menu
f5 refresh
numlock locks the key pad
f1-help
some others for your help
winkey+e= open my computer
in the turn of menu : u-turn off ,r-restart , h-hibernation ,shift-displays hibernation option
ctrl+alt+del : win task manager
alt+tab :cycle between two windows