PC并行打印口与多台下位单片机的通讯，将接口分成数据、状态、控制三组，由其寄存器分别控制。

For communication among parallel print port of PC and multiple single-chips, interface is divided into data, state and control groups respectively controlled by each register.

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PC并行打印口与多台下位单片机的通讯，将接口分成数据、状态、控制三组，由其寄存器分别控制。

For communication among parallel print port of PC and multiple single-chips, interface is divided into data, state and control groups respectively controlled by each register.

youdao