The Einstein was released in the United Kingdom in the summer of 1984. 
A Tatung monitor (monochrome or colour) and dot matrix printer were also available as options, 
plus external disc drives and an 80 column display card. It was also capable of emulating the 
Spectrum 48k with the "Speculator" addon.

The machine was physically large, with an option for one or two built-in three-inch floppy disk drives 
manufactured by Hitachi. At the time, most home computers used ordinary tape recorders for storage. 
Another unusual feature of the Einstein was that on start-up the computer entered a simple machine code monitor, 
called MOS (Machine Operating System). A variety of software could then be loaded from disk, including a 
CP/M-compatible operating system called Xtal DOS (pronounced 'Crystal DOS', created by Crystal Computers in Torquay), 
and a BASIC interpreter (Xtal BASIC). Thanks to the reliability of the machine, and ample memory, the machine proved 
useful by many software houses to use for programming, and then porting the code to the machines they were made for, 
namely the Spectrum 48k, Amstrad CPC, and Commodore 64. Eventually, it was superseded by the PC and Atari ST as the 
development systems of choice.