What is a Clock Wire in a computer and what is it for?
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Others have answered what the clock signal is for but you perplexingly asked about the clock Wire. Are you talking about the wire that connects from the front panel on your computer case to a jack on the motherboard? If so that is connected to a switch and will toggle the computer speed between two different settings. Honestly it is a bit of a legacy thing these days as I’m not sure any modern systems use it any more. But it was very commonly used in machines in the 286-486 days. The reason you would toggle the speed is a lot of software back then, particularly games, were written expecting a specific system speed. If you ran it on a newer faster computer it could run too fast and in the case of games make them difficult to play and with other software it may straight up crash. So if you had to run older programs you may use that clock button to toggle to a slower speed.
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