What was the first PC-based operating system called?
A) Microsoft Disk Operating System (MS-DOS)
B) UNIX
C) Linux
D) Control Program for Microcomputers (CP/M)

Question

Quizplus · Accepted Answer

The first PC-based operating system was called Control Program for Microcomputers (CP/M), which was created by Gary Kildall in 1974. MS-DOS was introduced later in 1981 as a competitor to CP/M. UNIX and Linux were not PC-based operating systems, but rather designed for larger, multi-user systems.

What Was the First PC-Based Operating System Called