Charles Roth is Professor Emeritus in Electrical and Computer Engineering at the University of Texas at Austin, where he taught Digital Design for more than four decades. He is the author of Fundamentals of Logic Design, which is in its sixth edition, and Digital Systems Design using VHDL, which is in its second edition.
Larry L. Kinney is a Professor and Director of Undergraduate Studies at the University of Minnesota. He received his Ph.D in Electrical Engineering from the University of Iowa in 1968. His research concerns digital system and digital computer design, specifically concurrent error detection techniques, testing of logic and design, distributed computer systems, computer architectures, error detecting/correcting codes, and applications of microprocessors.