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Abstract
The old traffic light control systems are mostly realized by digital circuits. With the development of social economy, traffic lights with digital circuit can not meet the increasing traffic pressure. Therefore, a new method must be sought to replace the complex and unstable control system. Nowadays, PLC technology is developing rapidly, and its applicationgs are becoming more and more extensive. It plays an extremely important role in industrial automation and is widely used in various industries. With the development of science and technology, the function of programmable controller is becoming more and more perfect, coupled with miniaturization, low price, and high reliability, tits role in modern industry has become more prominent.
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Details
1 Engineering College of Cryptographic, Engineering University of PAP, Xi’ an 710086, China
2 Foundation Department, Engineering University of PAP, Xi’ an 710086, China