keyboard

A panel of buttons used for typing and performing other functions on a computer or typewriter.

A row of levers that are depressed with the fingers to produce or modulate the sound of an instrument, such as a piano or organ.

Any of various instruments, played by means of a musical keyboard, often connected to a synthesizer or amplifier.

To set (copy) by means of a keyed typesetting machine.

To enter (text or data) into a computer by means of a keyboard.

To play (a composition) on a piano or keyboard.

Pedal keyboards in the organ are called radiating when the keys are made to converge somewhat below the player’s seat, like the ribs of a fan, and concave when the general level of the inner keys is lower than that of the outer ones. In the best organs the pedal keyboard is both concave and radiating.

The set of keys for operating the letters of a type-writing or type-settingmachine.