The problems encountered designing very large scale integrated circuits (VLSI) are fundamentally different from the problems encountered in the design of small scale integrated circuits. The differences require a new methodology of design for the new large scale circuits, and the new design methodology requires a new set of tools. The computer aided design work at Caltech has progressed from a recognition of the inherent differences and has produced a new design methodology and a set of tools which attack the new problems in integrated circuit design
