https://twetch.app/t/cb5348b75fd04daa74403c492b545ec6e5c005…

https://twetch.app/t/cb5348b75fd04daa74403c492b545ec6e5c005eff5a6c02733a38d53891f33d7 When the IBM PC was introduced in 1981, it was originally designated as the IBM 5150, putting it in the "5100" series -