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Many computer hardware description languages have been introduced to describe and model digital networks at the register transfer level.1-3Most CHDL's, however, like common programming languages, are "text oriented" and employ textual statements in the specification of a digital system. The process of converting a word statement problem into a description written in a design language is often tedious, especially when the design is complex. Many designers overcome this difficulty by "drawing" register layouts and control sequence or state diagrams for a design before hand-translating them into a specification in an appropriate design language. With the reduction in the costs of on-line computing and graphic terminals, this approach can be used early in the computer-aided-design cycle. This has in fact been accomplished at the University of Missouri-Rolla, where a graphic language called FLOWWARE has been developed to allow digital networks to be specified pictorially.