Keyboard assembly

A keyboard assembly comprising:

• a keyboard including a chassis, and a plurality of keycaps disposed on said chassis;
• a plurality of sensor units disposed at said chassis and corresponding respectively to said keycaps, each of said sensor units being configured to sense a pressure applied to a corresponding one of said keycaps and to output a pressure signal indicating magnitude of the pressure;
• and
• a control unit electrically connected to said sensor units, and including
• a detecting module configured to receive the pressure signal from each of said sensor units, and to output a current pressure value corresponding to said pressure signal upon receipt of the pressure signal,
• a rate determining module coupled to said detecting module for receiving the current pressure value therefrom, and configured to output a current repetition rate according to the current pressure value, and
• a control module coupled to said rate determining module for receiving the current repetition rate therefrom, and configured to output a plurality of key codes corresponding respectively to said keycaps,
• wherein, when one of said keycaps is being depressed, said control module is further configured to detect whether the one of said keycaps was previously depressed, to repeatedly output a corresponding one of the key codes at the current repetition rate while the one of said keycaps was previously depressed, and to output the corresponding one of the key codes once while the one of said keycaps was not previously depressed.