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The Apple IIgs is equipped with a 65816 CPU, the 16-bit evolution of the 6502 CPU. It was released in september 1986. The gs in the name stands for graphics and sound.  It is equipped with superior graphics (640x200 in 4 colours, 320x200 in 16 colours, with 4096 colour palette), an high-end Ensoniq 32-voice soundchip, a separate keyboard and mouse, and a Macintosh-like Graphical User Interface.