PPSC Service Center Officials (BPS-11) 2020, Computer MCQs, PPSC Solved Past Papers MCQsIn a computer what does OS stand for? Posted on April 3, 2021April 3, 2021 by Rana TahirA. Optical Sensibility B. Order of Significance C. Operating System D. Organized SoftwareShare 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)