 It is completely identical to the previous machine except for 4 chips changed on the motherboard (and a small ""Enhanced"" or ""65C02"" sticker placed over the keyboard power indicator).The purpose of the update was to make the Apple IIe more compatible with the Apple IIc (released the previous year) and, to a smaller degree, the Apple II Plus.This change involved a new processor, the CMOS-based 65C02 CPU, a new character ROM for the text modes, and two new ROM firmware chips.