Num lock
From Free net 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.
When a computer's operating system crashes or hangs the Num Lock key is usually the only key that responds to being pressed.
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Keys affected by Num Lock
| Key Name | Numlock On | Numlock Off |
| Numpad 1 | 1 Key | End key |
| Numpad 2 | 2 Key | Down Arrow Key |
| Numpad 3 | 3 Key | Page Down |
| Numpad 4 | 4 Key | Left Arrow Key |
| Numpad 5 | 5 Key | No function |
| Numpad 6 | 6 Key | Right Arrow Key |
| Numpad 7 | 7 Key | Home key |
| Numpad 8 | 8 Key | Up Arrow Key |
| Numpad 9 | 9 Key | Page Up |
| Numpad 0 | 0 Key | Insert key |
| Numpad . | . Key | Delete key |
