The recent developments in computer hardware and software are presented to inform architects of this design tool. Technical advancements in equipment include--(1) cathode ray tube displays, (2) light pens, (3) print-out and photo copying attachments, (4) controls for comparison and selection of images, (5) chording keyboards, (6) plotters, and (7) digitizers. Computer programing and topology are discussed as software developments in this field. Several present problems and projected future use of this design system are also explained. (TC)