The spreadsheet (VisiCalc)

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Who

Dan Bricklin, an American Jewish programmer, with Bob Frankston.

When

1979

Where

Massachusetts, USA

VisiCalc, released in 1979, was the first electronic spreadsheet and the 'killer app' that turned the personal computer into an essential business tool. It was conceived by Dan Bricklin, an American Jewish programmer, and built with Bob Frankston.

Part of “The Gifts of the Jews” — verified Jewish contributions to the world, with sources.