<prompt> Translate the following text to EnglishHakuna mtu aliyewahi kutumia mfumo wa DOS katika miaka ya 1980, lakini nilijua watu wengi wenye Commodore 64, TI 94, Apple II, kompyuta za Tandy, na hata Timex - zote zikiwa na mifumo tofauti ya uendeshaji isiyoambatana.  <response>: I didnt know anyone with a DOS system in the early 80s, but I knew plenty of people with Commodore 64s, TI 99-4As, Apple IIs, computers by Tandy, and even Timex--all with distinct and incompatible operating systems. 