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12 votes

What did Ctrl+NumLock do?

CTRL+NUMLOCK was Pause, CTRL+SCROLLOCK was Break. It was not until later that the keyboard was updated with new buttons for newer machines, and got a separate key for Pause/Break, which then still ...
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-5 votes

What did Ctrl+NumLock do?

In my answer here I infer that the unusual scancode for the Pause/Break key emulates the user pressing and then releasing Ctrl+NumLock. No it does not. Left CTRL is 1D Right CTRL is E0 1D Pause/...
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28 votes

What did Ctrl+NumLock do?

In the IBM PC 5150, CtrlNumLock paused the system until another key (not NumLock) was pressed. As described in page 5-21 of the relevant Technical Reference: The combination of the Ctrl and Num Lock ...

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