The Atari ST was a home computer that was first introduced in 1985 by Atari Corporation, being the successor of the Atari 8-bit family and the ST being the new generation of home computers to feature a GUI (Graphical user interface), which also included the Commodore Amiga, Apple Macintosh and Acorn Archimedes (UK only).
The ST was however, noted for being the first to offer a bitmapped ‘colour’ GUI, which was known as GEM (Graphics Environment Manager) from Digital Research.
Like the Amiga and Apple Mac. The ST was based around a Motorola 68000 CPU and it had a clock speed of 8MHz. Atari did live up to their slogan ‘power without the price‘, when in 1986, the 1040ST was the first computer to ship with a megabyte of RAM for less than $1000.