从1946年世界上出现第一台电子计算机至今,虽然只有三十多年的历史,但电子计算机发展速度之快,应用范围之广是惊人的。据统计,自电子计算机诞生以来,每过5～8年,运算速度提高十倍,可靠性提高十倍,而体积则缩小十分之九,成本也降低十分之九。预计八十年代电子计算机的应用项目可达五千多项。目前,电子计算机已广 From 1946 the world’s first computer appeared so far, although only 30 years of history, but the rapid development of electronic computers, the scope of application is staggering. According to statistics, since the birth of electronic computers, every 5 to 8 years, computing speed increased tenfold, reliability increased tenfold, while the volume is reduced by nine tenths, the cost is reduced by nine tenths. It is estimated that more than 5,000 electronic computer applications will be available in the 1980s. At present, the computer has been widely