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自从1971年世界上第一个4位微处理器4004问世以来,微处理器和其他的大规模集成电路产品以惊人的速度发展,微处理器的性能和集成度几乎每两年翻一番,而成本却每两年下降一半。至今微处理器在宏观上已经历了4位、8位、16位和32位四代产品。1976年以后,国外以8位的微处理器8080A、8085、Z-80、6502、6800等为核心的8位微型计算机开始应用。1980年以后,我国从国外引进了以 Z-80、6502等为核心构成的8位微型计算机系统。此后短短的三、四年内,全国微型计算机增加到接近万套(还不包括大量单板计算机),改变了我国以前的计算机单纯用于科学和工程方面的数值计算的局面,使管理数据处理等计算机新的
Since the advent of the world’s first 4-bit microprocessor, the 4004, microprocessors and other LSI products have grown at an alarming rate, doubling the performance and integration of microprocessors almost every two years, The cost has dropped by half every two years. Microprocessors so far have gone through the macro 4, 8, 16 and 32 four generations of products. After 1976, foreign 8-bit microprocessors 8080A, 8085, Z-80,6502,6800, etc. as the core of 8-bit microcomputer began to apply. After 1980, China imported 8-bit microcomputer system composed of Z-80 and 6502 as the core. In a short period of three to four years, the number of microcomputers in the whole country increased to nearly ten thousand sets (not including a large number of single-board computers), which changed the situation that our country’s former computers were used solely for scientific and engineering numerical calculations. As a result, management data processing Other new computer