据报道,日本引入独特的逻辑运算方式,解决了用数字电路实现故障-安全的课题。在列车运行自动控制系统中,当发生故障时,必须给出使列车停车的信号。一般地说,某一系统当其内部发生任何故障时,该系统必能给出一个控制设备于安全侧的输出值,这样的系统就叫做故障-安全系统。但是,对于数字信息处理来说,它是采用将“1”和“0”组合起来的二进制运算方 According to reports, Japan introduced a unique way of logic operation to solve the problem of using digital circuits to achieve fault-safety. In the automatic train control system, when a fault occurs, a signal must be given to stop the train. In general, a system that has any failure in its interior must have a safety-related output that controls the device. Such a system is called a fail-safe system. However, for digital information processing, it uses a binary operator that combines “1” and “0”