@adr @amoroso Minicomputer is not anymore used as term, but surprisingly all other terms still make sense: super-computer > mainframe > server > workstation > personal-computer.

A super-computer is focused on mathematical calcs; a mainframe on transaction processing, usually internal to a company; a server on services, usually to the external world, but it can be in competition with a mainframe; a workstation is a professional personal computer.

Minicomputers were general-porpouse computers, playing the roles of shared personal-computers, and/or servers and/or poor-man mainframe. They existed before the born of personal-computers and servers.

Probably one of the last incarnation of minicomputers is the IBM AS/400. It is classified as midrange-computer.