Computer Aided Design of Monolithic Integrated Circuits

by Samuel J. Lynch, Pennsylvania State Univ at, Harrisburg, United States,

Document Type: Proceeding Paper

Part of: University Programs in Computer-Aided Engineering, Design, and Manufacturing


An algorithm has been developed to relocate the sites of electrical components and integrated circuits. The process simulates site location changes in order that path lengths of conductors may be determined while cross-overs are counted. The digital computer makes this practical. The suboptimal design procedure involved the following steps for a given design: an initial placement layout was made; a distance matrix was developed; the values for an interconnection matrix were determined; a weight coefficient based on the length of conductors and number of crossovers was devised; and a merit factor for each permutation of modules was computed.

Subject Headings: Computer languages | Computer software | Computer aided design | Computing in civil engineering | Matrix (mathematics) | Algorithms | Integrated systems | Structural systems

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