Grady Booch

Developer of the Unified Modeling Language, Booch got his first programming experience on a Fortran IV while in high school. Graduating from military academy in 1977, he worked as a software project...

Gururaj S. Rao

Designer of Systems Leadership functions that differentiated S/390 from its competition, Rao is personally credited with IBM's mainframe resurrection. His team successfully implemented IBM's breakthrough copper interconnect technology to set a new...

Don Hammond

Developer of time standards for space navigation, high-speed computer printers, and medical ultrasound technology, Hammond built a 50-year career on these and other significant contributions. While at HP from 1959 to 1987, Hammond...

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....

Watts S. Humphrey

Father of Software Quality who headed the IBM software team that introduced the first software license, Humphrey was awarded the National Medal of Technology for his contributions to software engineering. He founded...

Michael (Mike) James Massimino

Researcher on human operator control of space robotics systems resulting in two patents, and developer of laptop computer displays to assist operators of the Space Shuttle remote manipulator system, Massimino is an...

Ravi Sandhu

Inventor of 29 security technology patents and leader of multiple teams conducting research on many aspects of cyber security, Sandhu has served as Executive Director of the Institute for Cyber Security at...

Ralph L. Palmer

Developer of the IBM 604 Electronic Calculator, Palmer graduated with a B.S. in electrical engineering from Union College in Schenectady in 1931. He joined IBM as an engineer in 1932. It was here...

Leslie Lamport

Known for his seminal work in distributed systems and as the initial developer of LaTeX, Lamport is a prominent computer scientist and mathematician. A graduate of the Bronx High School of Science, he...

Lionel Kattner

Contributor to the development of the first planar integrated circuit and co-founder of Signetics Corporation, Kattner is recognized as a key figure in early semiconductor history. A graduate of Southwestern University in...

Butler W. Lampson

Developer of the Berkeley Timesharing System for Scientific Data Systems' SDS 940 computer, Lampson was part of Project GENIE at UC Berkeley during the 1960s, where he and Peter Deutsch created that...

George Winthrop Fairchild

Chairman of IBM from its founding through 1924, Fairchild was a pivotal figure in the early history of the company. Primarily self-educated, he rose to prominence through his own effort and enterprise....

Neil Bartlett

Key contributor to IBM's risk analytics business, Bartlett has served as an IBM Fellow, Chief Technology Officer, and Head of Development for the Risk Analytics division of IBM. His innovative work in...

David G. Arscott

Founder board member of the IT History Society and Silicon Valley venture capitalist, Arscott spent his entire professional career investing in private and public technology companies. In 1968, he joined the group...

Elisha Gray

Best known for his development of a telephone prototype in 1876, Gray is considered by some writers to be the true inventor of the variable resistance telephone, despite losing out to Alexander...

Sam Ruby

Co-developer and principal maintainer of the Feed Validator — a tool used to check the validity of HTML, CSS, XML documents, and RSS feeds — Ruby has made significant contributions to web...

Tim William Bray

Co-inventor of the XML web standard, Bray has been a major contributor to XML and Atom web standards. Right out of college, Bray joined Digital Equipment Corporation in Toronto as a software specialist....

Edward (Ed) R. McCracken

Instrumental in putting the IMAGE database on every HP 3000, McCracken is recognized as a key figure in turning that system into a successful commercial platform. He later served as Chief Executive...

Robert Endre Tarjan

Renowned for fundamental achievements in the design and analysis of algorithms and data structures, Tarjan is an American computer scientist. He discovered several important graph algorithms, including Tarjan's off-line least common ancestors...

Lewis Fry Richardson

Pioneer of fractals and the modified Richardson iteration method for solving systems of linear equations, Richardson was also an English mathematician, physicist, meteorologist, psychologist, and pacifist who pioneered modern mathematical techniques of...