Lotus 1-2-3

1-2-3 redirects here. For the Len Barry song, see 1-2-3 (song), for the 1961 Billy Wilder comedy, see One, Two, Three. Lotus 1-2-3 is a spreadsheet program from Lotus Software (now part of IBM). It was the IBM PC's first killer application; its huge popularity in the mid-1980s contributed significantly to the success of IBM PC in the corporate environment.
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<tool, product> A spreadsheet for MS-DOS from Lotus Development Corporation. It can be programmed using "macros" and comes with a separate program to produce graphs and charts but this cannot be run at the same time as the spreadsheet. It has keyboard-driven pop-up menus as well as one-key commands, making it fast to operate. Lotus 1-2-3 supported EGA and later VGA graphics. Early versions used the filename extension "WK1".
Version: 4.
Lotus 1-2-3 has been the subject of several user interface copyright court cases in the US.
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1-2-3's successor, Symphony, had simultaneous update of spreadsheet, graph and word processor windows.
(1995-11-28)