Submitted by GriffinFTW t3_10j43bk in todayilearned
madman1969 t1_j5m8av2 wrote
Reply to comment by Suspicious-Post-5866 in TIL that Microsoft's first operating system was Unix-based by GriffinFTW
Yep, he paid $50K for the rights to QDOS, which became MS-DOS.
Fun fact is QDOS was short for 'Quick & Dirty Operating System' :/
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