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近年来,随着集成电路向大规模集成电路和超大规模集成电路方向迅速发展,每一芯片上包含的元器件越来越多(可达10~3—10~4门),芯片相应的功能越来越复杂,所要求的线路、版图规模越来越大,制造工艺也越来越精细,从而使得大规模集成电路的生产工作量大,综合性强,投产周期长,特别是对设计的正确性,可靠性要求很高,以免因设计错误而造成的巨大的试投产损失。从这些特点来看,大规模集成电路的设计工作就很难再用人工完成。而用计算机进行模拟、检验、布图、制造,既能大大地减轻人工劳动,又能缩短设计周期,保
In recent years, with the rapid development of integrated circuits to large-scale integrated circuits and very large-scale integrated circuits, each chip contains more and more components and devices (up to 10 ~ 3-10 ~ 4), and the corresponding functions of the chip More and more complex, the required lines and layouts are becoming larger and larger, and the manufacturing process is more and more sophisticated, which makes large-scale integrated circuit production workload, comprehensive, long production cycle, especially for the design Correct, high reliability requirements, so as to avoid design errors caused by a huge trial put into operation loss. From these characteristics, the design work of LSIs can hardly be done manually. The use of computer simulation, inspection, layout, manufacturing, both greatly reduce labor, but also shorten the design cycle, Paul