Num lock
From Wikipedia, the free encyclopedia
Num Lock is a key on the numeric keypad of most keyboards, used to switch that pad between number entry and arrow keys. It is a toggle key, like Caps Lock and Scroll Lock. Its state is usually represented by a light on the keyboard.
The Num Lock key exists because earlier 84-key IBM PC keyboards did not have arrows separate from the numeric keypad. Num Lock would be used to choose between the two functions.
[edit] Keys affected by Num Lock
| Key Name | Numlock On | Numlock Off |
|---|---|---|
| Numpad 1 | 1 | End key |
| Numpad 2 | 2 | Down Arrow Key |
| Numpad 3 | 3 | Page Down |
| Numpad 4 | 4 | Left Arrow Key |
| Numpad 5 | 5 | No function |
| Numpad 6 | 6 | Right Arrow Key |
| Numpad 7 | 7 | Home key |
| Numpad 8 | 8 | Up Arrow Key |
| Numpad 9 | 9 | Page Up |
| Numpad 0 | 0 (zero) (comma on some keyboard layouts) | Insert key |
| Numpad . | . (dot) | Delete key |
Num Lock is also used in standard BIOS for extra input.
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| Computer Keyboard Keys | |
|---|---|
| Dead keys | Compose |
| Modifier keys | Control · Shift · Alt/Option (Apple) · AltGr · Command/Meta (MIT keyboards) · Windows · Fn (compact keyboards) |
| Lock keys | Scroll lock · Num lock · Caps lock · Shift key |
| Navigation | Arrow · Page scrolling (Page up/Page down) · Home/End |
| Editing | Return/Enter · Backspace · Insert · Delete · Tab · Space bar |
| Misc. | SysRq/Print screen · Break/Pause · Escape · Menu · Numeric keypad · Function · Power management (Power, Sleep, Wake) · Language input |
