Num Lock

Updated: 04/01/2018 by Computer Hope

Num LockShort for numeric lock or number lock, the Num Lock or Num Lk key is located on the top left corner of the numeric keypad of the keyboard and enables and disables the numeric pad.

Turning the Num Lock on allows you to use the numbers on the keypad and turning the Num Lock off enables the key's other functions, such as using the keypad as an alternative set of arrow keys. The picture shows what the Num Lock key with a LED may look like on a keyboard.