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单片机又称微型控制器,是专门针对工业实时控制需要而设计的超大规模集成电路。在单片机的内部,集成有微处理器、内存储器、定时器、I/O口、通信处理器等功能电路,本身就相当于一个小微型机系统。由于它集成度高、功能强、可靠性高、成本低廉,在工业控制中的应用日渐广泛。然而,对一个复杂的控制系统要求而言,单片机的功能还是十分有限,无法完全满足,
Microcontroller, also known as micro-controller, is designed for industrial real-time control needs of large-scale integrated circuits designed. Microcontroller integrated in the internal microprocessor, memory, timer, I / O port, communication processor and other functional circuits, itself is equivalent to a small microcomputer system. Because of its high integration, strong function, high reliability and low cost, it is widely used in industrial control. However, for a complex control system requirements, the function of the microcontroller is still very limited and can not be fully satisfied,