Definition
MS-DOS (Microsoft Disk Operating System) was a widely used operating system for IBM PC-compatible computers. It was dominant in the 1980s and early 1990s. Think of it as the grandfather of modern operating systems like Windows. MS-DOS used a command-line interface, meaning users had to type commands to interact with the computer. It was simple compared to today's graphical operating systems. It paved the way for the modern computing era. Although obsolete, it holds an important place in computer history.