Part one of term paper
Keyboards 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 compu ...

Part two of term paper
... a current to flow across a pad. Hard contact: When the key is pressed to conectors are pressed together forming a physical conection creating a current. The key board has in side it a small microprocessor this will scan the keyboard once every millisecond to check for changes in the current when the key is pressed the processor finds that the current has increased and reacts accordingly and the same when the current is depressed and the current decreases. Over the year ...