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How Dan Bricklin created VisiCalc, the first Spreadsheet Software

How Dan Bricklin created VisiCalc, the first Spreadsheet Software

Harald Sack
On July 16, 1951, computer scientist Dan Bricklin was born. Together with Bob Frankston he created VisiCalc, the first spreadsheet computer program (1979) which created a market beyond hobbyists for the emerging personal computers. Today, everybody knows spreadsheet programs, no matter if you choose a desktop application or a web based application, spreadsheets are everywhere. And sometimes, we don’t have any idea, how we could possibly get along without them. Spreadsheets So,…
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computer science
It’s a computer! – The fabulous Commodore Amiga

It’s a computer! – The fabulous Commodore Amiga

Harald Sack
In 1985 Commodore revolutionized the home computer market by introducing the high end Commodore Amiga with a graphic power that was unheard of by that time in this market segment. Based on the Motorola 68000 microprocessor series the Amiga was most successful as a home computer, with a wide range of games and creative software, although early Commodore advertisements attempted to cast the computer as an all-purpose business machine. In addition, it was  also…
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computer science
IBM and the Success Story of the Personal Computer

IBM and the Success Story of the Personal Computer

Harald Sack
On August 12, 1981, IBM presented the IBM 5150, the very first IBM personal computer, commonly known as the IBM PC, is the original version and progenitor of the IBM PC compatible hardware platform. It was created by a team of engineers and designers under the direction of Philip Donald Estridge of the IBM Entry Systems Division in Boca Raton, Florida. Actually, it were his decisions that dramatically changed the computer industry,…
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engineering
Apple 1 and the Homebrew Computer Club

Apple 1 and the Homebrew Computer Club

Harald Sack
On April 1, 1976, Steve Jobs, Steve Wozniak and Ron Wayne (who dropped out shortly after) founded the Apple Computer Company. The company’s first product, the Apple I was demonstrated for the first time at the Homebrew Computer Club in Palo Alto, California. When Jobs Met Wozniak Steve Wozniak met Steve Jobs became friends already in 1970, when Jobs worked for the summer of 1975 at Hewlett-Packard (HP), where Wozniak was working on a…
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