A key found on a computer keyboard often located close to the keyboard pause key. The scroll lock key is intended to temporarily stop the scrolling of text or halt the operation of a program. There are not many software programs today that take advantage or have a use for this key. Keyboard LED's that indicate if scroll lock is enabled or disabled.
Microsoft Excel is a good example of a software program that uses this key. If scroll lock is enabled on the keyboard when you press any of the arrow keys the screen will move in that direction but the selected cell will not change.