function key of computer | function keys of computer keyboard | use of function key F1 to F12

OMG🔥You will Be Surprised to Know the Use of F1 to F12 keys.
In this video we have explained the use of all function keys on keyboard. We have practically explained use of F1, F2, F3, F4, F5, F6, F7, F8, F9, F10, F11, F12 keys. Please watch the video till the end.
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