Daniel Paul Siewiorek

Designer or co-designer of nine multiprocessor systems and a key contributor to the dependability design of over two dozen commercial computing systems, Siewiorek has served as the Buhl University Professor of Electrical...

Lionardo di ser Piero da Vinci

Among those who designed a calculator, da Vinci stands as one of history's most remarkable minds — an Italian polymath regarded as the epitome of the "Renaissance Man", displaying skills in numerous...

Florian Brody

Co-inventor of Voyager's Expanded Books, the first electronic books to be read on a laptop, Brody is an international marketing executive and digital media specialist with over 25 years of experience. He...

Alonzo Church

A major contributor to mathematical logic and the foundations of theoretical computer science, Church is sometimes called the father of theoretical computer science. He is best known for the lambda calculus, the...

Terry G. Johnson

Founder of Miniscribe in 1980, an early manufacturer of 5.25-inch and later 3.5-inch drives, Johnson was a pioneer in disk storage products. Born in Ogden, Utah, Johnson graduated from high school in 1953....

Qi (English pr. Chee) Lu

Instrumental in driving Microsoft's partnership with Yahoo! in Search and the launch of Bing, Lu has served as Executive Vice President of Microsoft's Applications and Services Group, where he set the vision,...

Isaac Newton

Stating the three universal laws of motion that enabled many of the advances of the Industrial Revolution and are still the underpinnings of the non-relativistic technologies of the modern world, Newton also...

Kevin Mitnick

One of the most controversial and most-wanted computer hackers in United States history, Mitnick was convicted of various computer- and communications-related crimes in the late 20th century. Following his release, Mitnick went on...

Dave Schmidt

Co-founder of Tymeshare, Inc., Schmidt developed the company in 1964 along with Tom O'Rourke to sell time-sharing services and software packages for users. It had two SDS/XDS 940 computers; access was via...

Karl Kempf

Pioneer in applying advanced mathematics to industrial and engineering challenges, Kempf is best known for heading a group of mathematicians at Stanford University who built computer models allowing Intel to design financial...

David C. Walden

A member of the small team of engineers that developed the ARPANET, the precursor to the Internet, Walden is recognized as one of the first Internet programmers. After three years at MIT...

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...

Joel S. Birnbaum

Director of the development of the precursor of Hewlett-Packard precision architecture — the basis for all Hewlett-Packard's RISC computers — Birnbaum has also served as Senior Vice President for Research and Development...

Paul (Rusty) Russell

Writer of the packet filtering systems ipchains and netfilter/iptables in the Linux operating system kernel, Russell is an Australian free software programmer and advocate also known for his work on the Linux...

Matti Makkonen

Known as the father of SMS (Short Message Service) — i.e., text messaging — Makkonen was an engineer in the field of Mobile Communications. Born in Suomussalmi, Finland, he was employed (among...

Richard P. Gabriel

Co-designer of Common Lisp (CL), Gabriel is an American computer scientist known for his work related to the Lisp programming language in computing. His best known work is a 1990 essay, "Lisp:...

Stephen Warshall

Developer of the transitive closure algorithm known as Warshall's algorithm, Warshall made foundational contributions to graph analysis for finding shortest paths in a weighted graph. Born in New York City, Warshall went to...

Brian Pollard

A member of the team whose research developed the Sirius, which in 1959 claimed to be the smallest and most economically priced computer in the European market, Pollard was a key figure...

Gladys West

Recognized for her contributions to mathematical modeling of the shape of the Earth, West was an African American mathematician whose work on satellite geodesy models was later incorporated into the Global Positioning...

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...