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DECSYSTEM-20, the Glossary

The DECSYSTEM-20 was a family of 36-bit Digital Equipment Corporation PDP-10 mainframe computers running the TOPS-20 operating system and was introduced in 1977.^[1]

21 relations: Bit slicing, Central processing unit, Computerworld, Digital Equipment Corporation, Emitter-coupled logic, Gordon Bell, Living Computers: Museum + Labs, Magnetic-core memory, Mainframe computer, Operating system, Paul Allen, PDP-10, PDP-11, Programmed Data Processor, Singer Corporation, Singer System Ten, Time-sharing, TOPS-10, TOPS-20, Word (computer architecture), 36-bit computing.
36-bit computers
Computer-related introductions in 1977
DEC mainframe computers

Bit slicing

Bit slicing is a technique for constructing a processor from modules of processors of smaller bit width, for the purpose of increasing the word length; in theory to make an arbitrary n-bit central processing unit (CPU).

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Central processing unit

A central processing unit (CPU), also called a central processor, main processor, or just processor, is the most important processor in a given computer.

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Computerworld

Computerworld (abbreviated as CW) is an ongoing decades-old professional publication which in 2014 "went digital." Its audience is information technology (IT) and business technology professionals, and is available via a publication website and as a digital magazine.

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Digital Equipment Corporation

Digital Equipment Corporation (DEC), using the trademark Digital, was a major American company in the computer industry from the 1960s to the 1990s.

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Emitter-coupled logic

In electronics, emitter-coupled logic (ECL) is a high-speed integrated circuit bipolar transistor logic family.

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Gordon Bell

Chester Gordon Bell (August 19, 1934 – May 17, 2024) was an American electrical engineer and manager.

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Living Computers: Museum + Labs

Living Computers: Museum + Labs (LCM+L) was a computer and technology museum located in the SoDo neighborhood of Seattle, Washington.

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Magnetic-core memory

In computing, magnetic-core memory is a form of random-access memory.

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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, enterprise resource planning, and large-scale transaction processing.

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Operating system

An operating system (OS) is system software that manages computer hardware and software resources, and provides common services for computer programs.

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Paul Allen

Paul Gardner Allen (January 21, 1953 – October 15, 2018) was an American businessman, computer programmer, researcher, film producer, explorer, sports executive, investor and philanthropist.

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PDP-10

Digital Equipment Corporation (DEC)'s PDP-10, later marketed as the DECsystem-10, is a mainframe computer family manufactured beginning in 1966 and discontinued in 1983. DECSYSTEM-20 and PDP-10 are 36-bit computers and DEC mainframe computers.

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PDP-11

The PDP–11 is a series of 16-bit minicomputers sold by Digital Equipment Corporation (DEC) from 1970 into the late 1990s, one of a set of products in the Programmed Data Processor (PDP) series.

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Programmed Data Processor

Programmed Data Processor (PDP), referred to by some customers, media and authors as "Programmable Data Processor," is a term used by the Digital Equipment Corporation from 1957 to 1990 for several lines of minicomputers.

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Singer Corporation

Singer Corporation is an American manufacturer of consumer sewing machines, first established as I. M. Singer & Co. in 1851 by Isaac M. Singer with New York lawyer Edward C. Clark.

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Singer System Ten

The Singer System Ten was a small-business computer manufactured by the Singer Corporation.

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In computing, time-sharing is the concurrent sharing of a computing resource among many tasks or users by giving each task or user a small slice of processing time.

See DECSYSTEM-20 and Time-sharing

References

[1] https://en.wikipedia.org/wiki/DECSYSTEM-20

Also known as DEC-20, DECSYSTEM 20, DECSYSTEM 2020, DECSYSTEM 2040, PDP-20.

DECSYSTEM-20, the Glossary

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