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Which is oldest operating system??
Guys which is oldest operating system of microsoft
3 Respuestas
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Oldest operating system was invented by Chinese, it's called abacus.
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MS DOS maybe? it has initial release on August 12, 1981, the first OS from windows series is the following https://en.wikipedia.org/wiki/Windows_1.0 released November 20, 1985.
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It,s Abacus invented in China.
But oldest windows operating system is ☆ MS DOS ☆