集成电路(Integrated Circuit, IC)按其集成度(单位芯片上集成的电子元件数量)高低可分为以下几类:
小规模集成电路(SSI, Small-Scale Integration)
中规模集成电路(MSI, Medium-Scale Integration)
大规模集成电路(LSI, Large-Scale Integration)
超大规模集成电路(VLSI, Very Large-Scale Integration)
极大规模集成电路(ULSI, Ultra Large-Scale Integration)