Borje Langefors

Pioneer of the first theoretical approach to systems development practices, Langefors was the first computer scientist to develop a coherent model of the development of computer-based information systems in the early 1960s....

Werner Almesberger

Writer of the code to support Differentiated Services on Linux, Almesberger was an Austrian free software computer programmer and open-source hardware designer mainly known as a hacker of the Linux kernel. Born...

Susan Estrada

Founder of CERFnet, one of the original regional IP networks, Estrada is recognized as an Internet pioneer and named a "thinking nerd" by colleagues, with a deep interest in emerging broadband technologies...

Randy Eisenman

Founder and CEO of Handango, which he positioned as the global leader in the smartphone content market, Eisenman drove the company's strategy and built a world-class team after founding the company in...

Giovanni Poleni

Builder of the first pinwheel design calculating clock, Poleni was a pioneer of mechanical computation. Made of wood, his calculating clock was built in 1709; he destroyed it after hearing that Antonius...

John Bardeen

Co-inventor of the transistor and the only person to have won the Nobel Prize in Physics twice, Bardeen was an American physicist and electrical engineer. He received the prize first in 1956...

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...

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...

Robin Oliver Gandy

A pioneer in recursion theory, Gandy is best known for the Spector-Gandy theorem, the Gandy Stage Comparison theorem, and the Gandy Selection Theorem. A British mathematician and logician, he was a friend,...

Gottfried Wilhelm Leibniz

Discoverer of the binary number system and independent co-inventor of infinitesimal calculus, Leibniz occupied a prominent place in the history of mathematics and the history of philosophy. He developed the infinitesimal calculus...

Alexander Bain

Inventor of the electric clock and pioneer of the telegraph, Bain transformed early communications technology. His first patent was dated January 11, 1841, and was in the names of John Barwise, chronometer...

Gordon Kidd Teal

Developer of the first silicon transistor, Teal transformed the semiconductor industry. Born in South Dallas, Texas, he was Valedictorian at the Bryan Street High School in Dallas, Texas. He earned his undergraduate...

Lubomir Georgiev Iliev

Pioneer of computing in Bulgaria and of abstract mathematics, Iliev was born in Samokov. He graduated from Sofia University in 1908, became a professor in 1925, and earned a PhD in Mathematical...

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...

Michael (Mike) A. McNeilly

Holder of the first patent for infrared deposition of silicon and other materials — a breakthrough that revolutionized deposition quality and produced slip-free, dislocation-free epi — McNeilly is a Silicon Valley pioneer...

Patrick Cousot

Co-inventor of Abstract Interpretation, a theory of sound approximation of mathematical structures, Cousot developed this influential technique in formal methods together with his wife Radhia in 1975. In the 2000s, he worked...

Robert (Bob) M. Frankston

Co-creator of VisiCalc and co-founder of Software Arts, Frankston received numerous honors and awards for his work. He has been named a Fellow of the Association for Computing Machinery (1994) "for the...

Gene Howard Golub

Co-publisher of an algorithm with William Kahan in 1970 that made the computation of the singular value decomposition (SVD) feasible and that is still used today, Golub was one of the preeminent...

Lawrence (Larry) G. Roberts

Developer of ARPANet and the Internet, Roberts served as chief scientist at the Advanced Research Projects Agency, where he and his team created packet switching and the ARPANet, which was the predecessor...

Daniel Karrenberg

Pioneer of the Internet in Europe, Karrenberg is a computer scientist who has focused on inventing, designing, and implementing Internet-related systems, especially those that collect and analyze data about the Internet itself....