Question

$why\are\F\and\J\called\guide\keys?$

Answer 1

Answer:

The ridges found on the F and J buttons on a computer keyboard are designed to help users locate the correct keys without looking down. The reason why only these keys have ridges is to help users place their hands in the optimum typing position.

Explanation:

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Answer 2

J and F are called guide keys because of the ridges present on them. These help the user to locate the correct keys without looking down.