Num Lock

Num LockShort for numeric lock or number lock, the Num Lock 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 arrow pad. The picture shows what the Num Lock key with a LED may look like on a keyboard.

To enable Num Lock, press the Num Lock button and make sure the Num Lock LED light is on. To disable Num Lock, press the Num Lock button and make sure the Num Lock LED light is off.

Below is a chart with additional information about what each key does when Num Lock is enabled and disabled. For example, pressing the "2" key when Num Lock is enabled enters the number "2" and when Num Lock is off, it will arrow down one line.

Key Num lock enabled Num lock disabled
0 0 Ins
1 1 End
2 2 Down arrow
3 3 PgDn
4 4 Left arrow
5 5 Nothing
6 6 Right arrow
7 7 Home
8 8 Up arrow
9 9 PgUp
. . Del

Related pages

Also see: Keyboard terms, Number, Numeric keypad, Togglekeys