在实时控制系统中，时钟控制电路及程序的设计十分重要。

In real time control system, it is important to design the clock control circuit and program.

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在通信协议中，主要实现了双向数据缓冲器、数据移位寄存器、时钟控制电路以及奇偶校验等功能。

The protocol realized some functions, such as two-way data buffer, shift register, clock circuit and parity check.

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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。

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.

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