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Blaise Pascal
He invented the mechanical calculator -
Lady Augusta Ada
she translated an article by Italian military engineer Luigi Menabrea on the engine, which she supplemented with an elaborate set of notes of her own, simply called Notes. -
Charles Babbage
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Alan Turing
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Howard Aiken
He envisioned an electro-mechanical computing device that could do much of the tedious work for him. This computer was originally called the ASCC (Automatic Sequence Controlled Calculator) and later renamed Harvard Mark I. -
Tommy Flowers
A Mark 2 redesign utilizing 2,400 valves had begun before the first computer was finished, in anticipation of a need for additional computers. The first Mark 2 Colossus went into service at Bletchley Park on 1 June 1944. -
Jack Kilby
He is the inventor of the handheld calculator and the thermal printer. -
Bill Gates
The demonstration, held at MITS's offices in Albuquerque was a success and resulted in a deal with MITS to distribute the interpreter as Altair BASIC. Paul Allen was hired into MITS, and Gates took a leave of absence from Harvard to work with Allen at MITS in Albuquerque in November 1975. -
Steve Jobs
In 1976, Wozniak single-handedly invented the Apple I computer
