Andy Hertzfeld

Key member of the original Apple Macintosh development team, Hertzfeld graduated from Brown University with a Computer Science degree in 1975 and attended graduate school at the University of California, Berkeley. In...

John Maxwell Cohn

An innovator in design automation for both analog and digital custom integrated circuits, Cohn has served as Chief Scientist of Design Automation in the Systems and Technology Group at IBM, Burlington, Vermont....

Angel Angelov

Founder of the Institute of Engineering Cybernetics and Robotics in Bulgaria, Angelov is recognized for pioneering computer science applications to particle accelerators and broader industrial control systems. Microprocessor-based control and pattern recognition...

Steve Anthony Ballmer

CEO of Microsoft, Ballmer is one of the most prominent figures in the history of the technology industry. He grew up in Farmington Hills, Michigan. In 1973, he graduated from Detroit Country Day...

Carlo Heinrich Séquin

Pioneer in computer processor design, Séquin is a Professor of Computer Science at the University of California, Berkeley. He has worked with computer graphics, geometric modelling, and on the development of computer...

Gordon Kidd Teal

Developer of the first silicon transistor, Teal transformed the semiconductor industry. Born in South Dallas, Texas, he was Valedictorian at the Bryan Street High School in Dallas, Texas. He earned his undergraduate...

Francis Wilton Reichelderfer

Instrumental in bringing modern computerized technology to weather forecasting, Reichelderfer presided over a revolutionary era in the history of the National Weather Service. From 1938 to 1963, he guided the organization through...

Russell Lincoln Ackoff

Recognized as the "Father of Operations Research" for helping establish one of the world's first Departments of Operations Research, Ackoff is also celebrated internationally as a pragmatic academic, systems thinker, and prolific...

Craig W. Reynolds

Creator of the Boids artificial life simulation (1986), Reynolds is an artificial life and computer graphics expert. Reynolds worked on the film Tron (1982) as a scene programmer, and on Batman Returns...

Robin Oliver Gandy

A pioneer in recursion theory, Gandy is best known for the Spector-Gandy theorem, the Gandy Stage Comparison theorem, and the Gandy Selection Theorem. A British mathematician and logician, he was a friend,...

Rowland Hanson

Creator of Microsoft's highly acclaimed branding strategy and the name "Windows," Hanson has served as Vice President of Corporate Communications at Microsoft and went on to become CEO of The HMC Company...

Eva Tardos

Recipient of the Fulkerson Prize (1988), the Dantzig Prize (2006), and the IEEE John von Neumann Medal (2019), Tardos is known as a Hungarian mathematician and the Jacob Gould Schurman Professor of...

Fujio Masuoka

Inventor of flash memory, Masuoka has carved out a path to a new era whereby consumers are able to carry videos, music, books and data with them wherever they go. Born in...

Richard (Dick) Manning Karp

Co-publisher with John Hopcroft of the Hopcroft–Karp algorithm, still the fastest known method for finding maximum cardinality matchings in bipartite graphs, Karp is a computer scientist and computational theorist at the University...

Charles (Charlie) William Bachman

Pioneer of database technology, Bachman spent his entire career as an industrial researcher rather than in academia. Born in Manhattan, Kansas, in 1924, Bachman's father was a football coach and minor league baseball...

Ivan Plander

Developer of the analog computer around 1958, Plander is a Slovak computer scientist who received his Ph.D. at the Technical University in Prague and his Habilitation (Dr.Sc.) in Computer Science at the...

Bailey Whitfield Diffie

Pioneer of public-key cryptography, Diffie co-authored the landmark 1976 paper "New Directions in Cryptography," which introduced a radically new method of distributing cryptographic keys, going far toward solving one of the fundamental...

Walden (Wally) C. Rhines

Supervisor of the development of Texas Instruments' first speech synthesis devices, used in the iconic "Speak & Spell" toy, Rhines is also co-inventor of the GaN blue-violet light emitting diode, now important...

Léon Bollée

Inventor of the first calculating machine, Bollée began work in 1887 on three calculating machines: the Direct Multiplier, the Calculating Board, and the Arithmographe. Bollée's Multiplier was the second successful direct-multiplying calculator...

Robert (Bob) P. Colwell

Leader of the development of Intel's Pentium 4 CPU, Colwell is also recognized as the chief IA-32 architect on the Pentium Pro, Pentium II, and Pentium III microprocessors. An electrical engineer and...