Frederick Phillips Brooks, Jr.

Manager of the development of OS/360, Brooks was also known for writing candidly about the process in his seminal book *The Mythical Man-Month*. "It is a very humbling experience to make a...

Naveen Selvadurai

Co-founder of the location-based social networking site Foursquare.com, Selvadurai is a US internet entrepreneur born in Chennai, Tamil Nadu, India. He graduated with degrees from King's College London in the UK and...

Jack van Kinsbergen

From the Petworth neighborhood of Washington D.C., he graduated in 1959 from University of Maryland with a degree in Electrical Engineering. He began working at Philco in Philadelphia in the spring of...

Hector de Jesus Ruiz

Former CEO and executive chairman of Advanced Micro Devices, Inc. (AMD), Ruiz led the semiconductor company through a period of major transformation. Hector de Jesus Ruiz was born in Piedras Negras, Mexico, a...

Victor Saul Miller

Co-inventor of Elliptic Curve Cryptography (ECC), Miller is an American mathematician at the Center for Communications Research (CCR) of the Institute for Defense Analyses in Princeton, New Jersey, US. He received his...

Thomas (Tommy) Harold Flowers

Designer of Colossus, the first programmable electronic computer, Flowers made one of the most significant contributions to wartime codebreaking. His first contact with the wartime codebreaking effort came when he was asked...

Richard Ernest Bellman

Developer of dynamic programming, Bellman made foundational contributions to mathematics and computer science by introducing a method for solving complex problems by breaking them down into simpler sub-problems. An American applied mathematician...

Peter A. Cunningham

Founder of INPUT, the leading provider of government market intelligence, Cunningham has also served as a founder and board member of the IT History Society. As Chairman of INPUT's board of directors, Peter...

Michael (Mike) A. Kaczmarski

Co-creator of the IBM Tivoli Storage Manager product family and leader of the redesign of the TotalStorage Productivity Center, Kaczmarski is an acknowledged IBM expert in storage management. Part of the IBM...

Andrei Petrovich Ershov

Pioneer of Soviet computer science, Ershov was responsible for the languages ALPHA and Rapira, AIST-0 the first Soviet time-sharing system, the electronic publishing system RUBIN, and MRAMOR, a multiprocessing workstation. He was...

William (Bill) Worley Jr.

Principal creator of HP's two most important computer architectures, Worley's work includes PA-RISC (Precision Architecture—Reduced Instruction Set Computing) in the 1980s and PA-WW (Wide-Word) in the 1990s. He started programming in 1959 for...

John R. Opel

Responsible for obtaining a contract with Microsoft to create an operating system for IBM's first personal computer, Opel transformed the trajectory of the PC industry through a pivotal business relationship. A U.S. computer...

Michael J. Flynn

Proposer of Flynn's Taxonomy, a landmark classification of computer architectures developed in 1966, Flynn also served as Design Manager of prototype versions of the IBM 7090 and 7094/II. He joined IBM in...

Robert J. Harrison

Principal architect of the Northwest Computational Chemistry Software (NWChem), a computational chemistry code for massively parallel computers, Harrison is a distinguished expert in high-performance computing originally from Birmingham, England. He has served...

David Michael Ungar

Co-creator of the Self programming language, Ungar developed the prototype-based, object-oriented language with Randall Smith in 1986 while working at Xerox PARC. He described himself as "an out-of-the-box thinker who enjoys the...

Adriaan van Wijngaarden

One of the founding fathers of informatica (computer science) and designer of ALGOL, van Wijngaarden was a pioneering figure in the history of computing. Adriaan's education was in mechanical engineering, for which...

Jack St. Clair Kilby

Nobel Prize laureate in physics in 2000 for his invention of the integrated circuit, Kilby was also the inventor of the handheld calculator and thermal printer.

Alice Rowe Burks

One of 75 females employed as a "woman computer" performing mathematical calculations before electronic computers became commercially available, and co-publisher of the definitive Who Invented the Computer? in 2003, Burks was also...

László Kalmár

Pioneer in mathematical logic and theoretical computer science, Kalmár defined what are known as elementary functions, number-theoretic functions (i.e. those based on the natural numbers) built up from the notions of composition...

David Nahamoo

Developer of algorithms that contributed to IBM's leadership in automatic speech recognition, Nahamoo's work includes contributions that resulted in the company's highly successful deployment of ViaVoice. He has served as the Speech...