A rather old fashioned description of a medium powered computer.
In the early days of computing a 'mainframe' was housed in a large air-conditioned room and could attend to hundreds of people, whilst the 'microcomputer' was a low-powered personal computer.
In-between lay the 'minicomputer'. This was powerful enough to serve the needs of a small company or department but nowhere near the cost of a mainframe. Terminals would be connected to the minicomputer so several workers could use it at the same time.
These days, a file server running within a LAN (Local Area Network) is the more common setup.
Challenge see if you can find out one extra fact on this topic that we haven't already told you
Click on this link: Minicomputer