Micro computer is abbreviated as microcomputer, commonly known as computer, and its accurate name should be microcomputer system. It can be simply defined as: the implementation of the necessary external equipment and software on the basis of the microcomputer hardware system.
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There are three levels of microcomputer system from global to local: microcomputer system, microcomputer, and microprocessor (CPU). Neither a simple microprocessor nor a simple microcomputer can work independently. Only a microcomputer system is a complete information processing system and has its own characteristics.
The microcomputer is characterized by its small size, high flexibility, low price and easy use. Since IBM launched the first-generation microcomputer IBM-PC in 1981, the microcomputer has quickly entered various fields of society with its precise execution results, fast processing speed, high cost performance, light weight and compactness, and the technology is constantly updated and the products are quickly replaced. , From a simple calculation tool to a powerful multimedia tool capable of processing multiple information such as numbers, symbols, text, language, graphics, images, audio, and video. Today's microcomputer products have made a great leap compared to earlier products in terms of computing speed, multimedia functions, software and hardware support, and ease of use.