Its main function is to inform the computer when a key is pressed or released.

In this circuit, the chip can detect when a key is pressed.

The doors also stay open longer when the handicapped key is pressed and close more slowly than during regular operation.

All commands are run only after the Enter key is pressed at the end of the line.

If a key is then pressed on the fob, the sign announces the time of the next bus.

Once the Enter key is pressed, the area outside of the rectangle will be cropped.

It produces sound by plucking a string when a key is pressed.

A key is pressed multiple times to select one of the available letters for that key.

When keys are pressed, the text appears where the caret is.

The keyboard remains in caps lock mode until the key is pressed again.