Parts of A Computer and What They Do A key board is simply a way that the user may interface a fixed number of commands (equal to the number of keys that the manufacturer places on the board). The standard keyboard for home PCs is a QWERTY key board, but they are not restricted to this format as in industry they can be used to send different common commands to a computer for example a farm may have a key board controlling the environmental setting in the sheds with a button to dim the lights or turn them up or a button to turn on the water supplies. The keys on a QW