Was Gary Kildall's CP/M operating system used on the IBM PC?
Yes
No
Only for gaming
CP/M had parallels to the MS-DOS used on IBM PC
Answer
CP/M was not used on the IBM PC. The IBM PC used the MS-DOS operating system. CP/M had some similarities to MS-DOS, but they were not the same operating system.
Cracking the Code: Delving into the Legacy of Gary Kildall