Electronics & Computing Hardware

John Hennessy

RISC microprocessor architecture

United StatesEvidence: high confidenceChecked July 2026

Hennessy co-developed the Stanford MIPS RISC architecture, demonstrating a processor design that used simpler instructions to achieve high performance. RISC chips became foundational hardware for workstations, embedded systems and later mobile and cloud-computing processors. worldwide.

01

What John did

Co-developed the Stanford MIPS reduced-instruction-set computer architecture and its processor implementation.

02

Why it matters

The ACM recognizes Hennessy and David Patterson for pioneering RISC architecture, which it describes as a foundation of modern computing hardware.

03

Living-status check

Stanford's 2026 profile lists Hennessy as a professor and Knight-Hennessy Scholars director.