List of Computer Scientists - H

H

• Philipp Matthäus Hahn – mechanical calculator
• Eldon C. Hall – Apollo Guidance Computer
• Wendy Hall
• Joseph Halpern
• Richard Hamming – Hamming code, founder of the Association for Computing Machinery
• Jiawei Han – Data mining
• Juris Hartmanis – computational complexity theory
• Johan Håstad – computational complexity theory
• Les Hatton – software failure and vulnerabilities
• He Jifeng – provably correct systems
• Martin Hellman – encryption
• Gernot Heiser – Development of L4 and founder of OK Labs
• James Hendler – Semantic Web
• John L. Hennessy – computer architecture
• Andrew Herbert
• Danny Hillis – Connection Machine
• Geoffrey Hinton
• Julia B. Hirschberg – Computational Linguistics
• C. A. R. Hoare – Logic, rigor, Communicating sequential processes (CSP)
• John Henry Holland – genetic algorithms
• Herman Hollerith (1860–1929) – invented recording of data on a machine readable medium, using punched cards
• John Hopcroft – compilers
• Admiral Grace Hopper (1906–1992) – developed early compilers: FLOW-Matic, COBOL; worked on UNIVAC; gave speeches on computer history, where when gave out nano-seconds
• Eric Horvitz – artificial intelligence
• Alston Householder
• David A. Huffman (1925–1999) – Huffman coding, used in data compression.
• John Hughes – structuring computations with arrows; QuickCheck randomized program testing framework; Haskell programming language design.
• A. E. Hugo – parallel computing on heterogeneous multicore architectures
• Watts Humphrey (1927–2010) – Personal Software Process (PSP), Software quality, Team Software Process (TSP)