In context: Back in 1980, Tim Paterson was creating a new operating system he called QDOS or Quick and Dirty Operating System. The system was later renamed 86-DOS, as it was being designed to run on ...

The term DOS stands for Disk Operating System developed by Microsoft for micro computers. DOS is a single user operating system. It has a Character User Interface (CUI) i.e., communication between a ...

As the forerunner to the graphical user interfaces in Microsoft’s Windows platform, MS-DOS helped set the stage for the company’s dominance in the PC software market. When MS-DOS was released in 1981, ...

KolibriOS fits on a single floppy disk, updated as recently as a few months ago. Despite its old-school appearance, it features a full GUI and internet connectivity. If interested, download the image ...

With permission from Apple, The Computer History Museum and the Digibarn Computer Museum announced today it is publishing the original DOS source code for Apple’s 1978 Apple II. The Apple II was the ...