disk operating system
  • The software which runs all the software and hardware of a computer. It is the first program the computer loads when powered on, remains memory resident, and continuously controls and allocates all resources. Without it, for example, a computer can not recognize input, such as that from a keyboard, it can not process, as the operating system controls the use of the CPU, nor can it provide an output, as it manages all peripherals including the monitor. Its acronym is DOS. Also called executive, or supervisor.
  • (written as Disk Operating System)
    A common disk operating system. Its acronym is DOS.

Not what you were looking for?