The oldest mac OS is System 1
Mac OS X is a preemptive multitasking system.
No. Mac OS is an operating system.
Mac-OS=Disk operating system==Linux OS==Windows OS==Unix OS=
The Mac OS was designed by Apple as the operating system for their Macintosh range of computers. The first Mac OS, originally known as System Software, was introduced with the first Macintosh in 1984. Over the years the original Mac OS was developed, improved and expanded until Mac OS 9 in 2001. For version 10 Apple reworked the Mac OS around a UNIX core and this is known as Mac OS X.
The Mac's operating system was originally known as the System Software. It later became known as Mac OS followed by a version number - Mac OS 7, Mac OS 8 etc. The current 10th version is known as Mac OS X.
After Mac OS. Mac OS was based on the earlier Xerox Alto system.
Mac OS X is the operating system used by G5 Macs. The latest version of Mac OS X that will work on a G5 is Mac OS X 10.5 (also known as Leopard).
Mac OS X
Mac OS
Mac OS
Yes. That would be what the "OS" stands for. It's full name is Mac OS X. Mac = The Apple Macintosh computers it is designed for. OS = Operating System. X = The Roman numeral representing version 10 of the Mac OS.