| 摘要 |
A keyboard (50) includes a key module (52) comprising at least one key cell (60, 61) with an output end (OUT60, OUT61) which is selectively connected to a first voltage (Vcc) or a second voltage (GND), a detect circuit (54) electrically connected to the output end (OUT60, OUT61) of the key cell (60, 61) for generating a control signal (CS) whenever the voltage on the output end (OUT60, OUT61) of the key cell (60, 61) becomes the second voltage (GND) or the first voltage (Vcc), a parallel-to-serial register (56) electrically connected to the output end of the key module (52), and a processor (58) electrically connected to the parallel-to-serial register (56) and the detect circuit (54) for controlling the parallel-to-serial register (56) according to the control signal (CS). <IMAGE>
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