Name — To register and control the active state of the user exit.
名称——注册和控制用户出口的活动状态。
Lastly, the methods of software redundancy, setting present output state register unit, and setting self checking program to solve the problem of control state being out of order.
对于控制状态失常问题采用软件冗余、设置当前输出状态寄存单元和设置自检程序等对策。
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.
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.
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。
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