William Michael Johnson is a technologist, and pioneer in superscalar microprocessor design in the United States.
Johnson holds bachelor's and master's degrees in electrical engineering, both from Arizona State University.
Johnson was an architect and designer of early reduced instruction set computing (RISC) processors at IBM known as ROMP, in Austin, Texas.
[6][7] He was vice president of the Advanced Architecture Labs, responsible for technology development in the areas of processor, multimedia, networking, telecommunications, and personal computer system products.
The first book on the subject, it was an expanded version of his dissertation, and included an appendix on applying the techniques to the Intel Corporation x86 architecture.