Comp Sci unit 1 test

Charles Babbage

designed the Difference Engine

Ada Lovelace

worked with Babbage, wrote the first algorithm

Herman Hollerith

made punch-card machine for US census

Alan Turing

cracked Nazi Enigma codes in WWII, invented idea of a “universal machine”

Tommy Flowers

built Colossus, world’s first programmable electronic computer, to break Lorenz cipher.

John von Neumann

came up with stored-program idea

Grace Hopper

invented the compiler

Dennis Ritchie

created C programming language

Robert Noyce & Marcian Hoff

developed microchip, co-founded Intel.

Steve Jobs

popularized GUI

Bill Gates

made Windows dominant OS

Xerox

invented early PC concepts, mouse, GUI