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A superminicomputer, colloquially supermini, is a high-end

minicomputer A minicomputer, or colloquially mini, is a class of smaller general purpose computers that developed in the mid-1960s and sold at a much lower price than mainframe and mid-size computers from IBM and its direct competitors. In a 1970 survey, ...

. The term is used to distinguish the emerging

32-bit In computer architecture, 32-bit computing refers to computer systems with a processor, memory, and other major system components that operate on data in 32- bit units. Compared to smaller bit widths, 32-bit computers can perform large calcula ...

architecture midrange computers introduced in the mid to late 1970s from the classical 16-bit systems that preceded them. The development of these computers was driven by the need of applications to address larger memory. The term midicomputer had been used earlier to refer to these systems.

Virtual memory In computing, virtual memory, or virtual storage is a memory management technique that provides an "idealized abstraction of the storage resources that are actually available on a given machine" which "creates the illusion to users of a very ...

was often an additional criteria that was considered for inclusion in this class of system. The computational speed of these machines was significantly greater than the 16-bit minicomputers and approached the performance of small

mainframe computer A mainframe computer, informally called a mainframe or big iron, is a computer used primarily by large organizations for critical applications like bulk data processing for tasks such as censuses, industry and consumer statistics, enterpris ...

s. The name has at times been described as a "frivolous" term created by "marketeers" that lacks a specific definition. Describing a class of system has historically been seen as problematic: "In the computer kingdom, taxonomic classification of equipment is more of a black art than a science." There is some disagreement about which systems should be included in this class. The origin of the name is uncertain. As technology improved rapidly the distinction between minicomputer and superminicomputer performance blurred. Companies that sold mainframe computers began to offer machines in the same price and performance range as superminicomputers. By the mid-1980s microprocessors with the hardware architecture of superminicomputers were used to produce scientific and engineering

workstation A workstation is a special computer designed for technical or scientific applications. Intended primarily to be used by a single user, they are commonly connected to a local area network and run multi-user operating systems. The term ''worksta ...

s. The minicomputer industry then declined through the early 1990s. The term is now considered obsolete but still remains of interest for students/researchers of

computer history The history of computing hardware covers the developments from early simple devices to aid calculation to modern day computers. Before the 20th century, most calculations were done by humans. The first aids to computation were purely mechanic ...

Notable companies

Notable manufacturers of superminicomputers in 1980 included: Digital Equipment Corporation, Perkin-Elmer, and Prime Computer. Other makers of systems included SEL/Gould and Data General. Four years later there were about a dozen companies producing a significant number of superminicomputers. VAX 11-780 intero

Perkin-Elmer spun off their Data Systems Group in 1985 to form Concurrent Computer Corporation which continued making these systems. Nixdorf Computer, Norsk Data, and

Toshiba , commonly known as Toshiba and stylized as TOSHIBA, is a Japanese multinational conglomerate corporation headquartered in Minato, Tokyo, Japan. Its diversified products and services include power, industrial and social infrastructure systems ...

also produced systems.

Significant superminicomputers

* Interdata 7/32, 1974 * Digital Equipment Corporation VAX-11/780, 1978 * Prime Computer 750, 1979 * Data General Eclipse MV/8000, 1980 * IBM 4361, 1983 * IBM 9370, 1987

External links

References

{{Computer sizes *Super Classes of computers