VisiCalc was the first
spreadsheet program available for personal computers. Conceived by
Dan Bricklin, refined by
Bob Frankston and distributed by Personal Software Inc. in 1979 (later VisiCorp
? for the
Apple II computer, it propelled the Apple from being a hobbyist's toy to being a much-desired, useful financial tool for business. Later, more powerful clones of
VisiCalc include
Borland [Quattro Pro]
?, [Lotus 123]
? and
Microsoft Excel.
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