ce the early 1990s, Microsoft operating systems (first with MS-DOS and then with Windows) and CPUs based on Intel's x86 architecture – collectively called Wintel – have dominated the personal computer market, and today the term PC normally refers to the ubiquitous Wintel platform, or to Windows PCs in general (including those running ARM chips), to the point where software for Windows is marketed as "for PC". Alternatives to Windows occupy a minority share of the market; these include the Mac platform from Apple (running the macOS operating system), and free and open-source, Unix-like operating systems, such as Linux (including the Linux-derived ChromeOS). Other notable platforms until the 1990s were the Amiga from Commodore, the Atari ST, and the PC-98 from NEC. Terminology The term 'PC' is an initialism for 'personal computer'. While the IBM Personal Computer incorporated the designation into its model name, the term originally described personal computers of any brand. In some contexts, PC is used to contrast with Mac, an Apple Macintosh computer. Since none of these Apple products were mainframes or time-sharing systems, they were all personal computers but not PC (brand) computers. In 1995, a CBS segment on the growing popularity of PC reported: "For many newcomers PC stands for Pain and Confusion." History Main article: History of personal computers Commodore PET in 1983 (at the American Museum of Science and Energy), an early example of a personal computer The 8-bit architecture Pravetz 82 computer produced in Bulgaria from 1982, in a classroom in the Soviet Union The "brain" may one day come down to our level [of the common people] and help with our income-tax and book-keeping calculations. But this is speculation and there is no sign of it so far. —?British newspaper The Star in a June 1949 news article about the EDSAC computer, long before the era of the pe