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第二代微处理机(N沟)已经问世三年,现在开始向高性能方向发展,也就是在结构上采用大中型机的一些先进技术,象并行处理与流水线等。今天的微处理机典型结构如图1。有三部分:控制部分、处理部分、数据通路。代表机器有英特尔公司的8080,国家半导体公司的PACE和莫特洛拉公司的6800。这些机器的指令执行时间大致在2至10微秒。
Second-generation microprocessors (N-channels) have come out for three years and are now moving toward high performance, using some of the most advanced technologies for large and midrange machines like parallel processing and pipelining. Microprocessor today typical structure shown in Figure 1. There are three parts: control part, processing part, data path. Representative machines are 8080 from Intel Corporation, PACE from National Semiconductor and 6800 from Motolora. The instruction execution time for these machines is roughly 2 to 10 microseconds.