一、一般情况半导体集成电路出现于一九五九年,六十年代初期发展起来,到六四年已达相当水平,出现了大规模集成电路,目前,集成电路已大量用于整机,它的成熟知发展使电子设备跨入了一个新的时代。集成电路按功能分类主要有两类——数字集成电路与模拟集成电路,而后者又可分为 First, the general situation Semiconductor integrated circuits appeared in 1959, the early sixties developed, reached a considerable level in 1944, there have been large-scale integrated circuits, integrated circuits are now widely used in the machine, it The development of mature know-how has brought electronic devices into a new era. There are two main types of integrated circuits by function - digital integrated circuits and analog integrated circuits, which can be divided into