The keyboard has a duty as a receiving device data using arrangement of buttons, each button acts like an electronic switch is usually the keyboard is used for typing letters or numbers into the program.
The keyboard has served as input device that uses a sequence of buttons. Each button acts as an electronic switch normally. Then keyboard for typing text Or numbers into the various programs
Keyboard functions as the input device using sequence of buttons. Each of which the act as an electronic switch normally. And keyboard used for printing text. Or figures into the programs.