lock key

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English

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The three lock keys, close to the first generation aluminium badge on an IBM Model M Keyboard. This keyboard was minted in 1986.
The three LEDs of Caps Lock, Num Lock and Scroll Lock, in a COMPAQ keyboard. The Num Lock key can be seen below the LEDs.

Noun

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lock key (plural lock keys)

  1. Any of certain keys of a computer keyboard that switch between certain states, which may be represented by LEDs.

Usage notes

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Most commonly, the lock keys are Caps Lock, Num Lock and Scroll Lock. Less commonly, there is also F Lock or Office Lock, which controls the behaviour of the function keys. In addition, Insert also switches between states, but it is not represented by a LED.

Further reading

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Anagrams

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