PRIMS: an interactive system for the design of hybrid circuit layout

PRIMS is an interactive system to be used in the layout of hybrid circuits. The layout involves positioning integrated circuit chips and resistors on a substrate surface. Conducting paths are then defined in order to make interconnections between chips, external connection pads positioned around the edge of the substrate, etc.PRIMS is actually a language which includes commands for defining regions corresponding to integrated circuit chips, and for causing the system to define a tree of conducting paths to interconnect a set of points. There are also commands for displaying a partial layout, for editing the layout, and for generating plotter code for the final layout.