We base our approach to the design of complex logic ICs on four premises: Design of a chip's abstract architecture—its major components, their tasks, and their intercommunication—should precede definition of its functionality. Graphics is ideal for representing abstract architectures; text is better for functionality. The designer should not have to translate graphical information into text. Graphical and textual design capture can be integrated with synthesis. © 1996, OPA (Overseas Publishers Association) Amsterdam B.V.