✦ LIBER ✦

The use of computer aided design techniques in printed circuit layouts

✍ Scribed by C.B. Besant; A. Hamlyn; P.M. McLintock

Publisher: Elsevier Science
Year: 1973
Tongue: English
Weight: 584 KB
Volume: 5
Category: Article
ISSN: 0010-4485
DOI: 10.1016/0010-4485(73)90068-7

No coin nor oath required. For personal study only.

✦ Synopsis

Modern printed circuits are manufactured using a mask. This mask can be prepared by directin~ a light beam around a photographic plate to describe the required circuit. An etching process is then used to transfer the circuit from the photographic plate (the mask) to the circuit board.

A description is given of the techniques used to transfer a circuit design into a form suitable for input to a computer and thence into a data tape for use in controlling a high accuracy plotter, where the actual mask can be created using a light head. The work was performed using the CADMAC computer aided design system to formulate the data tape. This tape was subsequently used with a high accuracy Kingmatic plotter.

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