PPSC Past Paper Excise & Taxation Inspector Excise & Taxation Department 2018 Solved MCQs, Computer MCQs, PPSC Solved Past Papers MCQsWho was the programmer of Ms-Dos operating system? Posted on May 20, 2021 by Rana TahirA. R Jhon B. Bill Gates C. Dennis Ritchi D. noneShare this:Click to share on Twitter (Opens in new window)Click to share on Facebook (Opens in new window)Click to share on WhatsApp (Opens in new window)Click to share on Pinterest (Opens in new window)Click to share on LinkedIn (Opens in new window)
