The ST was Atari's first model in their 16-bit computer range. It featured an external 3.5 inch floppy disk and an interface to attach to either a high-resolution (640x400) monochrome monitor or a lower-resolution colour one.
With a similar specification to the Apple Macintosh and a price tag of around £750 (roughly £2000 less than the Macintosh) Atari hoped it would become a major business machine, but while it did very well with musicians thanks to the built in MIDI interface it never managed this success in other business fields.