一、概况微型计算机的研制在七十年代获得了长足的进展,相继出现了诸如8080、6800、Z80等典型商品投放市场,使微型计算机急剧地引入民用、工业的各个领域。伴随微处理器及其支援器件设备价格降低、可靠性提高、体积减小、功能增强,其应用日见扩大。日本电子工业振兴协会在1977年度的调查报告中指出,微处理器的销售额按每年递增8倍的比率上升,这种势头在今后一个相当时期还会继续保持。 I. Overview Micro-computer development in the seventies made considerable progress, have appeared, such as 8080,6800, Z80 and other typical products on the market, so that the rapid introduction of microcomputer in various fields of civil and industrial. With the microprocessor and its supporting devices and equipment to reduce the price, reliability, volume reduction, enhanced functionality, and its application has expanded. In a 1977 survey, the Japan Electronics Industry Association noted that sales of microprocessors have risen eight-fold each year, a trend that will continue for a considerable period of time to come.