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...Programmable logic controllers and microcontrollers learning objectives basics of their working programming instructions sets like latch master control self holding relays timer counter electrical drives which were controlled by design modify troubleshoot circuit unit introduction to plc what is a controller or an industrial digital computer has been ruggedized adapted for the manufacturing processes such as assembly lines robotic devices any activity that requires high reliability ease process fault diagnosis they first developed in automobile industry provide flexible easily replace hard wired timers sequencers since then have widely adopted automation suitable harsh environments example real time system output results must be produced response input conditions within limited otherwise unintended operation will result plcs can range from small modular with tens inputs outputs i o housing integral processor large rack mounted count thousands are often networked other scada systems des...