电子计算机是由各种电子元件、器件所组成的一种速度快、精度高,能自动进行逻辑控制的现代化计算工具。它的制成是二十世纪科学技术的重大成就之一。计算机自1946年出世以来,迄今只有三十余年的历史,共经历了五代的变化。其应用日益扩大,据不完全统计,项目已达二千六百多种。它在医学方面同样也得到了广泛地应用,它不 Computer is composed of various electronic components, devices composed of a fast, high precision, automatic logic control of the modern computing tools. Its making was one of the major achievements of science and technology in the twentieth century. Since its birth in 1946, the computer has only had over thirty years of history and has experienced five generations of changes. Its application is expanding day by day. According to incomplete statistics, the project has reached over 2,600 kinds. It has also been widely used in medicine, it does not