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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这就是移位寄存器，因为数据在每一个时钟脉冲的作用下通过寄存器会移动一位。

It is called a shift register because the data is shifted through the register by one bit position on each clock pulse.

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每个器件都有一个八位CMOS移位寄存器和CMOS控制电路，八个CMOS数据锁存，八个双极电流吸收达林顿输出驱动器。

Each device has an eight-bit CMOS shift register and CMOS control circuitry, eight CMOS data latches, and eight bipolar current-sinking Darlington output drivers.

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