| System | DOS |
| Floppy (5.25") | 6 |
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| Release Date: |
1/1/1985 |
| Manufacturer: |
Lotus
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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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 "Lotus 1-2-3 Release 2 (Upgrade)")
 "Lotus 1-2-3 Release 2 (Upgrade)")