Want a blast from the past? Microsoft just open-sourced its very first operating system, offering a rare insight into the ...
Microsoft on Tuesday released the earliest known DOS source code materials found to date to mark the 45th anniversary of 86-DOS 1.00.
XDA Developers on MSN
Microsoft open-sources MS-DOS 1.0, offering a rare look at PC history
This is a rare look at the tech giant's first operating system ...
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