What are the characteristics of disk operating system meaning?

Answer 1

Today, DOS is more historically important than anything.

DOS laid the foundation for the IBM PC to emerge in the PC market that at the time was still suffering from a total OS/platform/architecture war. It standardized soem technology in PCs such as the BIOS... however over the past couple of decades the BIOS has been rendered largely irrelevant to any processes on PCs for anythign beyond booting the system, and the past decade saw efforts to completely replace the BIOS with extensible firmware (UEFI).

So what makes DOS historically "important" is because it ended up allowing us to have PCs as we know them today, though only to a point. DOS's capabilities are limited without a lot of outside help, and even then DOS just can't really compare to any operating system with a genuine kernel at the core.

Answer 2

The functions of DOS, disc operation system, include obtaining keyboard input, producing screen output, and making/obtaining files for assembly language computer programs.