发明授权
US4326207A Programmable sequence controller 失效
可编程序控制器

Programmable sequence controller
摘要:
A sequence control system includes a main memory unit for storing therein a sequence program, an operation and control unit for decoding the sequence instruction and executing the designated operations, an input unit for fetching states of a process to be controlled as inputs, and an output unit for producing an output signal to control the process.
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