IBM PC DOSIBM PC DOS (an acronym for IBM Personal Computer Disk Operating System), also known as PC DOS or IBM DOS , is a discontinued disk operating system for the
IBM Personal Computer XTThe IBM Personal Computer XT (model 5160, often shortened to PC /XT) is the second computer in the IBM Personal Computer line, released on March 8, 1983
IBM Personal Computer ATThe IBM Personal Computer AT (model 5170, abbreviated as IBM AT or PC /AT) was released in 1984 as the fourth model in the IBM Personal Computer line,
IBM Personal ComputerThe IBM Personal Computer (model 5150, commonly known as the IBM PC ) is the first microcomputer released in the IBM PC model line and the basis for the
IBM PC–compatibleIBM PC –compatible computers are technically similar to the original IBM PC , XT, and AT, all from computer giant IBM , that are able to use the same software