IBM PC DOS (an acronym for IBM Personal Computer Disk Operating System), [nb 1] also known as PC DOS or IBM DOS, is a discontinued disk operating system for the IBM Personal …

DOS (/ d ɒ s /, / d ɔː s /) is a family of disk-based operating systems for IBM PC compatible computers. [1] The DOS family primarily consists of IBM PC DOS and a rebranded version, …

IBM PC-DOS was an IBM branded version of MS-DOS licensed from Microsoft for use on the IBM PC system. Versions of PC-DOS paralleled that of MS-DOS up until version 6.1, where PC …

Apr 30, 2017 · Please download files in this item to interact with them on your computer.

Aug 12, 2021 · According to Allen, under the contract signed that November, IBM agreed to pay Microsoft a total of $430,000, including $45,000 for what would end up being called DOS, …

Disk Operating System/360, also DOS/360, or simply DOS, is the discontinued first member of a sequence of operating systems for IBM System/360, System/370 and later mainframes. It was …

Also known as Advanced BASIC, this program requires an IBM PC with Cassette BASIC and at least 48Kb of RAM. It includes all Disk BASIC features, along with event trapping, advanced …

Mar 22, 2025 · IBM PC-DOS (The IBM Personal Computer DOS, also known as IBM DOS) was an operating system for x86-based IBM personal computers manufactured and sold by IBM. …

No longer Personal Computer DOS, the release sold with IBM systems was now called IBM DOS. Version 4.0, like 3.3, was developed by IBM with minimal involvement from Microsoft; many …

MS-DOS (/ ˌɛmˌɛsˈdɒs / em-es-DOSS; acronym for Microsoft Disk Operating System, also known as Microsoft DOS) is an operating system for x86 -based personal computers mostly …