Packaging printed circuit boards with interactive graphics☆

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Abstract

An interactive graphics terminal is used by a circuit board design engineer to package and document printed circuit boards. The designer enters a physical and electrical description of the circuit board and components into the central computer, a CDC 6400. The computer program displays images of the board and components on the screen of the terminal, a CDC 777. The designer, seated at the terminal, uses a light pen to move components and route conductor paths. Functions for automatic placement and routing are available to the designer. The central computer also maintains a data file holding the current status of the design. When the design is complete the computer can produce documentation and production data in the form of pen and ink plots, and data to drive automatic drilling machines and precision photoplotters.

Other versions of this program are being modified and developed for use in packaging integrated circuits and microwave stripline circuits.

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This paper was presented at the NASA-ICASE Conference on Application of Computer Graphics in Engineering, held at Langley Research Center, Hampton, VA, 1–2 October, 1975.

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Copyright © 1977 Published by Elsevier Ltd.