[Construction of a system for the automatic design of printed-circuit boards for medical electronic apparatus]

The structure of the system for designing printed circuit boards based on such widely used technical equipment as minicomputers and unified-system computers, is discussed. The system allows one to carry out, in consecutive stages, the automation of the process of designing printed circuit boards and the technological provision for their manufacture. The principles of designing the boards on the basis of algorithms using the notion of channels and including the subdivision of the total circuit into separate structural units, the location of different elements in these units and their tracing are described in detail. The stage of making up the design documents and the control punch tapes containing the final stage of tracing correction with the output of the control data or a coordinatograph and numerically controlled machines is considered.