+ 1
Which is oldest operating system??
Guys which is oldest operating system of microsoft
6 Answers
+ 7
Oldest operating system was invented by Chinese, it's called abacus.
+ 1
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.
+ 1
It,s Abacus invented in China.
But oldest windows operating system is â MS DOS â