Apple II was released in April 1977 ... Launched in 1986, it had IIgs DOS operating system. It had a real 16-bit CPU, the 65C816, which ran at 2.8 MHz and had 24-bit addressing, allowing up ...

Using an 8-bit 6502 microprocessor running at 1 MHz and an 8-bit bus, it ran the Apple DOS and ProDOS operating ... software of the time (see CPM). Apple II, II Plus, IIe and IIc Introduced ...