Jan. 26, 1983: Spreadsheet as Easy as 1-2-3

1983: Lotus begins selling its spreadsheet application for Microsoft DOS, called 1-2-3.
1-2-3 was not the first spreadsheet application — it was preceded by VisiCalc. But 1-2-3 quickly became the most popular, helping to boost sales of IBM PCs and PC clones, all of which ran DOS, and facilitating the rapid rise of Microsoft’s operating [...]

Source: http://www.wired.com/thisdayintech/2011/01/0126lotus-1-2-3/

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