This paper presents a clock control circuit in which an electronic clock is made by a MCU AT89C2051 16-bit timer and real-time control is achieved by the electronic clock's function of precise timing.

提出的时钟控制电路，是利用单片机at89c 2051的16位定时器做成电子时钟，并利用电子时钟的精确定时作用实现了实时控制。

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Interface and download chip is control-oriented and has complex clock relationships, therefore timing design is the key and difficult point.

自启动预载接口芯片以控制为主，时钟关系复杂。时序设计是整个设计的重点和难点。

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Interface and download chip is control-oriented and has complex clock relationships, therefore timing design is the key and difficult point.

自启动预载接口芯片以控制为主，时钟关系复杂。时序设计是整个设计的重点和难点。

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