The design is based on eight-way to answer in the basic concepts. Taking into account the need to set time-bound to answer according to the function, using AT89C51 microcontroller and external interface of the answer in his system, using microcontroller timer/counter timing and count of the principle, the hardware and software together organically, making the system able to correctly to carry out time, while the digital control to correctly display the time.

课程设计（八路数字抢答器）\数字抢答器的设计.doc
..........................\源程序及Proteus仿真图\chenzhan.c
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课程设计（八路数字抢答器）

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