1979 cromemco system three

he System Three is available in a multi-user system that lets you do the tasks usually associated with much more expensive time-share computers. You can have up to six terminals, a fast printer, a large RAM memory, and more. 

The System Three consists of a fast, powerful, Z80-based microcomputer with capability for enormous RAM memory expansion and with provision for up to four floppy disk drives. 

Not designed as a desktop system, the System Three is a large and heavy chassis intended to be rack-mounted or built into an office desk. 
The computer has a large 21-slot motherboard to accept a large variety of memory and I/O to suit virtually any application. 

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