.so ../ADM/mac .XX 33 549 "The UNIX Circuit Design System" .TL The .UX Circuit Design System .AU A. G. Hume .AU T. J. Killian .AB .SM UCDS is a system for the design and prototyping of digital systems. At the front end it provides hierarchical schematic entry, .SM PAL design and board layout; at the back end it produces data for various manufacturing technologies, in particular wire-wrap and multiwire. .AE