Crossword Puzzle Clue Answers
We've seen 1 answer for the crossword clue 'Old computer operating system' in our database. It has been used in 2 crosswords, the latest of which was the Pat Sajack's Code Letter crossword on April 21, 2009.
Crossword answers for the clue "Old computer operating system"
- DOS
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- Early Microsoft offering
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Last Seen In
- Pat Sajack's Code Letter - April 21, 2009
- USA Today - December 23, 2005