“Microsoft made preemptive multitasking a core feature of their flagship operating system in the early 1990s when developing Windows NT 3.1 and then Windows 95.

“Microsoft made preemptive multitasking a core feature of their flagship operating system in the early 1990s when developing Windows NT 3.1 and then Windows 95. It was later adopted on the Apple Macintosh by Mac OS 9.x” [1] You’re right about Win95 (and Win98 and ME) not having true memory protection, but when comparing MacOS and Windows back then MacOS’ lack of memory protection was always mentioned. [1] http://en.wikipedia.org/wiki/Computer_multitasking#Preemptive_multitasking.2Ftime-sharing http://en.wikipedia.org/wiki/Computer_multitasking#Preemptiv...