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大规模集成电路的发展有两个方面,一是存贮器,一是微处理机。这两者都首先在美国搞成,具体地说,是由美国英特尔公司分别于1970年、1972年制成,然后向日本、西欧推广。美国一直处领先地位。但是,必须注意的是,近年来日本缩短了这一差距,在有些方面已超过了美国。例如,N 沟MOS4 K 随机存贮器,美国的取数时间是150～350毫微秒,而日本做到100～300毫微秒。就拿日本电气公司(NEC)来说,1975年初,日本的计算机厂商感到美国的4k存贮器速度不够,希望有一种速度更高的4k 存贮器,就在这时,该公司开始试制这种存贮器,经过八个月的努力,制成了比美国产品速度更快的4k 随机存贮器,并在1975年底开始(?)国外出口。到1976年中,该公司的4k 存贮器月产25万块,仅次于美国的英特尔、
Large-scale integrated circuit development in two ways, one memory, one microprocessor. Both were first made in the United States, specifically, by Intel Corporation of the United States in 1970 and 1972, respectively, and then to Japan and Western Europe. The United States has always been at the forefront. However, it must be noted that Japan has shortened this gap in recent years and in some respects has overtaken the United States. For example, N-channel MOS4K random access memory, the United States to take the time is 150 ~ 350 nanoseconds, while Japan to do 100 ~ 300 nanoseconds. Take NEC, in early 1975, Japanese computer makers felt the 4k memory in the United States was not fast enough and hoped there would be a faster 4k memory, at which point the company began trial production After eight months of hard work, it made 4k random access memory faster than the U.S. product and began exporting at the end of 1975 (?). By mid-1976, the company’s 4k memory 250,000 per month, second only to the United States, Intel,