noun
PC DOS
Refers to the IBM PC DOS operating system, a variant of MS-DOS. Domain-specific computing term.
ＰＣＤＯＳは、ＩＢＭのパソコン向けに開発されたＯＳです。
PC DOS is an operating system developed for IBM personal computers.
Standard full-width alphanumeric spelling for the IBM PC DOS operating system.
Half-width variant commonly seen in technical contexts.
MS-DOS is the Microsoft version, while PC DOS is the IBM-customized variant. Functionally very similar.
Abbreviation of 'Personal Computer Disk Operating System', borrowed from English.