James Waddell Alexander II

Founder of cohomology theory, Alexander was also a pioneer in algebraic topology who contributed to the beginnings of knot theory by defining the first of the polynomial knot invariants. He was an American...

Donn B. Parker

A 2008 Fellow of the Association for Computing Machinery, Parker was a leading information security researcher and consultant. He received many awards in the information security field. He lectured at conferences, seminars,...

Karen Banks

Inducted into the Internet Hall of Fame in 2013 as a "Global Connector," Banks is a British computer networking pioneer recognized for expanding internet access to underserved communities worldwide. In the 1990s,...

Christiane Floyd

The first female professor of computer science in Germany, Floyd achieved that distinction in 1978. An Austrian computer scientist, she is also recognized as a pioneer of evolutionary participatory software design, an...

Bijan Davari

Leader of the IBM research team that produced the first generation of high-performance, low-voltage CMOS logic characterizing modern computer chips, Davari's pioneering work in miniaturization of semiconductor devices changed the world of...

Algirdas Avizienis

Organizer and director of the JPL STAR research project from 1961 to 1972, Avizienis is a Lithuanian-born computer scientist whose effort resulted in the construction and evaluation of the experimental JPL STAR...

Steven B. Lipner

Responsible for defining, supporting, and applying Microsoft's Security Development Lifecycle (SDL) process, Lipner has had forty years' experience in cybersecurity and has been named as inventor on twelve U.S. patents and two...

Eleanor Francis Helin

Principal investigator of NASA's Jet Propulsion Laboratory Near-Earth Asteroid Tracking (NEAT) program, Helin was one of the most prolific discoverers of minor planets in the history of astronomy. Over her career, she...

Margaret R. Fox

Member of the technical staff of the Electronic Computer Laboratory at the National Bureau of Standards, Fox graduated from Wisconsin State College in 1940 and joined the U.S. Naval Reserve in 1943,...

Ronald (Ron) Fagin

Pioneer in database theory and finite model theory, Fagin is an American computer scientist and IBM Fellow at the IBM Almaden Research Center, best known for introducing the Fourth Normal Form and...

Paul G. Miller

Responsible for all computer systems at Control Data Corporation (CDC) and for the technical direction of computer and memory development programs, Miller served as Vice President and Group General Manager of CDC's...

Leopold Kronecker

A contributor to the concept of continuity and the reconstruction of irrational numbers in real numbers, Kronecker was a German mathematician who worked on number theory and algebra. He was born in...

Thomas J. Misa

Noted IT historian and director of the Charles Babbage Institute (CBI), Misa specializes in the interactions of technology and modern culture. His undergraduate degree was from M.I.T. (1981) and his Ph.D. from...

Edson Hendricks

Developer of RSCS (later known as VNET), fundamental software that powered the world's largest network (or network of networks) prior to the Internet, Hendricks is an IBM computer scientist whose work directly...

Robin Milner

A Turing Award-winning pioneer of theoretical computer science, Milner shaped the formal understanding of computation through foundational contributions. He developed Calculus of Communicating Systems (CCS), a landmark formalism for modeling concurrent processes,...

Ronald K Stamper

Pioneer in organizational semiotics and information theory, Stamper is recognized for applying semiotics to information systems in a way that transformed the field. Born in Nottingham, England, 1934, Stamper studied mathematics and statistics...

Lee Felsenstein

Designer of the Osborne 1, the first mass-produced portable computer, Felsenstein is recognized for his work in reducing the costs of computer technologies to make them available to large markets. Lee had been...

Jeffrey A. Frey

Co-developer of technologies enabling cloud computing, Frey has served as an IBM Fellow and CTO for System z. He is one of the founding architects of System z Parallel Sysplex, which operates...

Rasmus Lerdorf

Creator of the PHP programming language, Lerdorf also contributed to the Apache HTTP Server and came up with the LIMIT clause, adding it to the mSQL Database in 1995. It is the...

Arthur Dehon Little

Founder of the consulting company Arthur D. Little, which played key roles in the development of the word processor and much more, Little was an American chemist and chemical engineer born in...