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...

Marian Adam Rejewski

Solver of the plugboard-equipped Enigma machine, the main cipher device used by Germany, Rejewski was a Polish mathematician and cryptologist who accomplished this feat in 1932. His success, along with his colleagues...

Edith Clarke

Pioneer of electrical engineering and the inventor of the Clarke calculator, Clarke broke barriers as the first woman to earn an M.S. in electrical engineering from MIT. Clarke studied mathematics and astronomy at...

Mark Eugene Russinovich

Co-developer of the website sysinternals.com, Russinovich wrote and published dozens of popular Windows administration and diagnostic utilities including Autoruns, Filemon, and RootkitRevealer. He has served as Chief Technology Officer (CTO) of Microsoft...

Edward Albert Feigenbaum

Known as the "father of expert systems," Feigenbaum is a computer scientist working in the field of artificial intelligence. Feigenbaum completed his undergraduate degree, and a Ph.D., at Carnegie Institute of Technology (now...

John R. Levine

Co-author of The Internet for Dummies (with Carol Baroudi and Margaret Levine Young), Levine is an Internet author and consultant specializing in email infrastructure, spam filtering, and software patents. Levine has chaired the...

Irene Greif

Inventor of the Version Manager — consistently designated by analysts as the most significant group-enabling feature in spreadsheets — Greif is an American computer scientist and a founder of the field of...

Yvonne Marie Andres

Among the earliest people to use the Internet to develop global e-learning opportunities for educators and students, Andrés founded the nonprofit Global SchoolNet in 1984, an international organization that facilitates collaborative educational...

Anatolii Alexeevitch Karatsuba

Author of the first fast computational method, Karatsuba was a Russian mathematician best known for discovering the first multiplication algorithm that runs in less than O(n²) time—specifically his algorithm is O(n log2...

Augusta Ada King, Countess of Lovelace

Known as the "World's First Computer Programmer," Lovelace wrote notes on Charles Babbage's analytical engine that include what is recognized as the first algorithm intended to be processed by a machine. An...

Robert M. Price

Leader of Control Data's early strategic expansion into international operations and marketing, Price also drove the strategic move into information and systems integration services. He graduated from Duke University in 1952, and...

Douglas B. Lenat

Prominent in artificial intelligence and machine learning research, Lenat was best known for the Cyc project, an attempt to build the basis of a general artificial intelligence by manually representing knowledge in...

Joseph (Josh) A. Fisher

Creator of VLIW architectures, which allow programs to explicitly specify instructions to be executed in parallel for higher performance, Fisher is an American computer scientist also noted for his work on compiling...

Brewster Kahle

Founder of the Internet Archive and creator of WAIS and Alexa Internet, Kahle has been a pioneering force in digital access and preservation. He was a member of the Chi Phi Fraternity....

Nicholas (Nick) John Pippenger

Co-inventor of extendible hashing, Pippenger is recognized for a number of fundamental results widely used in theoretical computer science, database processing, and compiler optimization. He held a B.S. degree in Natural Sciences...

Gary Durbin

Founder of a company in 1970 that introduced Secure, an early software security product, Durbin is a software pioneer and entrepreneur with over thirty-five years of experience. He began his career specializing...

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...

Milo S. Medin

Helping to deliver the first large-scale residential broadband access service in partnership with major cable operators, Medin has been part of the Internet development community for more than 25 years. He has...

Jean Baptiste Joseph Fourier

Best known for initiating the investigation of Fourier series and their applications to problems of heat transfer and vibrations, Fourier left an unfinished work on determinate equations which was edited by Claude-Louis...

Peter Karmanos, Jr.

Co-founder of Compuware, a worldwide leader in software technology, Karmanos launched the company in 1973 with two partners, Thomas Thewes and Allen Cutting. Born into a Greek immigrant family, he graduated from...