2 Mini Computers: Digital computer distinguished from a micro computer by higher performance, more powerful instruction sets, a higher price, and a wide selection of available programming languages and operating system, Distinguished from a mainframe by smaller size, lower cost, and less data handling capacity. Mini computer systems are divided into four operational classes: mini, midi, maxi, and super mini computers.
3 Mini Frame Computers
Large, expensive computers generally used for information businesses, colleges and organizations. Originally, the phrase referred to the extensive array of large rack and panel cabinets that held thousands of vacuums tubes in early computers mini frame can occupy an entire room and have very large data-handling capacities. mainframes are the largest, fastest and most expensive class of computers.
4 Super computers
Largest, Fastest and expensive mainframe computer available. Use by business and organization
that require extraordinary amounts of computing power. Some time called number crunches because they perform hundreds of millions of operations per second.
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