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VisiCalc /vi'zi-calk/ The first spreadsheet program, conceived in 1978 by {Dan Bricklin}, while he was an MBA student at Harvard Business School. Inspired by a demonstration given by Douglas Engelbart of a {point-and-click} user interface, Bricklin set out to design an application that would combine the intuitiveness of pencil and paper calculations with the power of a {programmable pocket calculator}. Bricklin's design was based on the (paper) financial spreadsheet, a kind of document already used in business planning. (Some of Bricklin's notes for VisiCalc were scribbled on the back of a spreadsheet pad.) VisiCalc was probably not the first application to use a spreadsheet model, but it did have a number of original features, all of which continue to be fundamental to spreadsheet software. These include {point-and-type} editing, range replication, and formulas that update automatically with changes to other cells. VisiCalc
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