DOS (/ dɒs /, / dɔːs /) 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, Microsoft 's MS-DOS, both of which were introduced in 1981.

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 Computer, its successors, and IBM PC compatibles. It was sold by IBM from the early 1980s into the 2000s.

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 developed by Microsoft.

PC-DOS 1.x was a floppy-only version of DOS. It cannot be installed to a harddrive. Emulation instructions: We recommend PCE or MESS. Others may work, but they must support 160k and 320k disk images. Some emulators (and real hardware) may require a "55 AA" boot signature to be added at the end of the floppy boot sector.

IBM PC DOS （英語： IBM Personal Computer Disk Operating System 的缩写）是 IBM PC 个人电脑 使用的 DOS 操作系统，由 微软 为 IBM 向 西雅圖電腦公司 購買他們所開發的作業系統，更名為PC-DOS後轉賣給IBM。 之後 微软 再將軟體改名為 MS-DOS 另外销售同一软件。 自1993年的IBM PC DOS 6.1起，IBM與微軟分道揚鑣，開始獨立發展。 PC DOS 1.25及2.0版本的源代码目前 托管在 GitHub 上 （页面存档备份，存于 互联网档案馆）。 IBM Corporation and Microsoft, …

PC-DOS 2000 is a minor update to PC-DOS 7.0 that fixes Y2K bugs. It is marketed as "PC-DOS 2000" but it reports itself as "IBM PC DOS 7.00, revision 1". 7.0/2000 was the last complete release.

A DOS is a specific type of OS that runs from the computer's HDD and provides a command-line interface to allow users to access and control the system and its various components by typing commands using a keyboard. The use of a CLI is the chief difference between disk operating systems and modern GUI-based operating systems.

它是由IBM为个人电脑专门开发的操作系统，跟 微软 后来的微软 磁盘操作系统 （MS-DOS）几乎完全一样。 目前，最新版本10.0。 微软 的windows系列操作系统也支持 控制台。 可以认为MS-DOS和PC-DOS没有大的区别（都为 磁盘操作系统）。 事实上出品 单位 不一样，MS-DOS由世界软件大王--Microsoft（微软 公司）出品，而PC-DOS则由世界电脑大王-- 国际商业机器公司 （IBM）对MS-DOS略加改动而推出。 由于 微软 在世界软件业的垄断性优势，所以其产品MS …

Free95 is an open-source windows-compatible operating system. Gallery. 0.3.0 Beta 2. What it is. Free95 is your friendly Windows Environment with an added trust of the open source community, all your favorite games, applications and such from Windows will …

Run DOS, Windows, OS/2 and other vintage PC applications in a web browser on your desktop computer, iPhone, or iPad. An assortment of microcomputers, minicomputers, terminals, programmable calculators, and arcade machines are also available, along with an archive of historical software and documentation.