由于越来越多的计算机结构都置于半导体芯片上,因而需要更先进的设计技术。对于大多数计算机制造厂商来说,这就是采用计算机辅助设计。目前,几乎所有的厂商都有某种自动化程序,因此缩短了设计周期。也许更为重要的是由于设计自动化而减少了差错,因为设计一旦上了芯片,就很难更改。 许多工业界人士认为,IBM公司拥有最 As more and more computer structures are placed on semiconductor chips, more advanced design techniques are required. For most computer manufacturers, this is computer-aided design. At present, almost all manufacturers have some kind of automation program, thus shortening the design cycle. Perhaps even more important is the reduction of errors due to design automation, since once the design is on the chip, it is hard to change. Many industry people think that IBM has the most