一、当代科学技术的发展,迫使人们不能不正视电子计算机在发展国民经济和科技事业中的重大作用。自从一九四六年世界上第一台电子计算机诞生以来,至今不过三十六年的历史。而电子计算机已经从电子管、晶体管、集成电路到大规模集成电路进行了四次大的更新换代。据有关资料介绍,在八十年代初全世界已拥有大、中、小型电子 First, the development of contemporary science and technology has forced people to face the great role of computer in the development of national economy and science and technology. Since the birth of the world’s first electronic computer in 1946, it has only been 36 years in history. The computer has been from the tubes, transistors, integrated circuits to large-scale integrated circuits were four major replacement. According to relevant information, in the early 1980s the world already had large, medium and small-sized electronics