Mini computer is a small size, which can be computer service mainframe users have multiple people at the same time, but it will not have sufficient capability to service users in the amount equivalent of mainframe computers.
Minicomputer, mainframe computer is small, which can serve multiple users simultaneously, but the performance will not be enough to serve the equivalent of a mainframe computer.
Minicomputer is a small computer mainframe, which can offer users many people with each other, but are not sufficient to service users performance in equivalent mainframe computer.