David Bradley

One of the twelve engineers who developed the original IBM PC, Bradley is known for creating the computer's ROM BIOS code. He is also the author of *Assembly Language Programming for the IBM Personal Computer* (Simon & Schuster, ISBN 0-13-049171-3, January 1984), also released in French as *Assembleur sur IBM PC* (Dunod, ISBN 2-225-80695-0) and in Russian ("Radio" Publishing House, Moscow). Bradley holds seven U.S. patents and has served as adjunct professor of electrical and computer engineering at Florida Atlantic University and at North Carolina State University.

Much of Bradley's career has been at IBM. He joined IBM after receiving a PhD from Purdue in 1975 and worked on the Series/1 system. In 1978 Bradley developed the I/O system for the System/23 Datamaster.

In 1980 he was one of twelve engineers developing the first IBM Personal Computer. Bradley developed the ROM BIOS, which led to his promotion to manage the BIOS and diagnostics for the IBM PC XT. In 1983 he formed the Personal Systems Architecture Department, and in 1984 Bradley helped manage development of the Personal System 2 Model 30.

In November 1987 he became manager of advanced processor design. His group developed the 486/25 Power Platform and the PS/2 Models 90 and 95. In 1991 Bradley became manager of systems architecture for the Entry Systems Technology group, and in 1992 he became the architecture manager for the group that developed a personal computer using the PowerPC RISC microprocessor.