电子计算机是一种快速运算机器,其效率和精确程度是任何手工计算机不可比拟的,因此正在日益广泛地用于各个领域。出于军事上的目的,世界上第一台电子计算机于一九四六年问世后,迄今已经经历了三代。大体上的发展过程是:一九四九～一九五九年是第一代电子管计算机,这是电子计算机体系确立的时代;从一九五九～一九六五年是第二代晶体管 Computer is a fast computing machine, its efficiency and accuracy is incomparable any manual computer, so it is increasingly used in various fields. For military purposes, the world’s first electronic computer has gone through three generations so far after its introduction in 1946. In general, the development process is as follows: The first generation of electron tube computers from 1949 to 1959 was the era established by the computer system; from 1959 to 1965, it was the second generation of transistors