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Index PDP-11

The PDP-11 is a series of 16-bit minicomputers sold by Digital Equipment Corporation (DEC) from 1970 into the 1990s, one of a succession of products in the PDP series. [1]

188 relations: Advanced Micro Devices, Air traffic control, Alcatel-Lucent, AMD Am2900, ANDOS, Apple Lisa, Application-specific integrated circuit, ASCII, Atmel, Automatic test equipment, Automation, Backplane, Bell Labs, Block (data storage), Booting, Brookhaven National Laboratory, Bucharest, Bulgaria, Bus (computing), Byte (magazine), C (programming language), C.mmp, Carnegie Mellon University, Central processing unit, Compatibility mode, Computer terminal, Coprocessor, CP/M, CPU cache, CSI-DOS, Current loop, Data General, Data General Nova, Datalogics, Datanet, Debugger, Debugging, DEC BATCH-11/DOS-11, DEC GT40, DEC J-11, DEC Professional (computer), DECtape, DEMOS, Dennis Ritchie, Digital Equipment Corporation, Direct memory access, Dot matrix printer, DVK, East Germany, Eastern Bloc, ..., Electronika 60, Electronika BK, Embedded system, Englewood Cliffs, New Jersey, Floating-point arithmetic, Floppy disk, Forth (programming language), Fuzzball router, Gordon Bell, Hard disk drive, Hardware register, Heathkit, Heathkit H11, Hungary, IBM Personal Computer, IBM Systems Network Architecture, Input/output, Instruction set architecture, Integrated circuit, Intel 80286, Intel 80386, Intel 8088, International Bell Telephone Company, Interrupt, Interrupt priority level, Interrupt vector table, IntervalZero, J/psi meson, Kilobyte, LINC, Line printer, Linear particle accelerator, Logic gate, Machining, MACRO-11, Magnetic-core memory, Massbus, MCP-1600, Megabyte, Memory protection, Memory-mapped I/O, Mentec PDP-11, Microcode, Micrometre, Microsoft, Minicomputer, MK-DOS, MONECS, Motorola 68000, MS-DOS, Multi-Environment Real-Time, MUMPS, Nesting (computing), Niche market, Nobel Prize, Numerical control, Octal, Operating system, Original equipment manufacturer, Orthogonal instruction set, PDP-10, PDP-11, PDP-11/73, PDP-4, PDP-5, PDP-8, Per Brinch Hansen, Peripheral, Pilkington, PL-11, Poland, Position-independent code, Power-on self-test, Prentice Hall, Printed circuit board, Process control, Programmed Data Processor, Punched card, Punched tape, Q-Bus, Real-time computing, RK05, RL02, Romania, Router (computing), RS-232, RSTS/E, RSX-11, RT-11, RTL/2, Samuel C. C. Ting, Serial port, SIMH, SM-1420, SM-4, Soviet Union, Superminicomputer, System bus, Teradyne, Terminal server, Texas Instruments, Therac-25, Throughput, Time-sharing, Timișoara, Transistor–transistor logic, TRIPOS, TSX-Plus, UCSD Pascal, UKNC, Ultrix, Unibus, Unimation, Uniprocessor system, University of Illinois at Urbana–Champaign, Unix, UNIX System III, VAX, VAX 8000, VAX-11, VAXBI Bus, Vector graphics, Venix, Version 6 Unix, Version 7 Unix, VT05, VT100, VT52, Western Digital, Wire wrap, Word (computer architecture), X.25, X86, Xenix, Xinu, Year 2000 problem, 16-bit, 9 track tape. Expand index (138 more) »

Advanced Micro Devices

Advanced Micro Devices, Inc. (AMD) is an American multinational semiconductor company based in Santa Clara, California, that develops computer processors and related technologies for business and consumer markets.

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Air traffic control

Air traffic control (ATC) is a service provided by ground-based air traffic controllers who direct aircraft on the ground and through controlled airspace, and can provide advisory services to aircraft in non-controlled airspace.

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Alcatel-Lucent S.A. was a French global telecommunications equipment company, headquartered in Boulogne-Billancourt, France.

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AMD Am2900

Am2900 is a family of integrated circuits (ICs) created in 1975 by Advanced Micro Devices (AMD).

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ANDOS is a Russian operating system for Electronika BK-0010, Electronika BK-0011 and Electronika BK-0011M series computers.

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Apple Lisa

The Apple Lisa is a desktop computer developed by Apple, released on January 19, 1983.

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Application-specific integrated circuit

An Application-Specific Integrated Circuit (ASIC), is an integrated circuit (IC) customized for a particular use, rather than intended for general-purpose use.

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ASCII, abbreviated from American Standard Code for Information Interchange, is a character encoding standard for electronic communication.

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Atmel Corporation is an American-based designer and manufacturer of semiconductors, founded in 1984.

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Automatic test equipment

Automatic test equipment or automated test equipment (ATE) is any apparatus that performs tests on a device, known as the device under test (DUT), equipment under test (EUT) or unit under test (UUT), using automation to quickly perform measurements and evaluate the test results.

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Automation is the technology by which a process or procedure is performed without human assistance.

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A backplane (or "backplane system") is a group of electrical connectors in parallel with each other, so that each pin of each connector is linked to the same relative pin of all the other connectors, forming a computer bus.

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Bell Labs

Nokia Bell Labs (formerly named AT&T Bell Laboratories, Bell Telephone Laboratories and Bell Labs) is an American research and scientific development company, owned by Finnish company Nokia.

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Block (data storage)

In computing (specifically data transmission and data storage), a block, sometimes called a physical record, is a sequence of bytes or bits, usually containing some whole number of records, having a maximum length, a block size.

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In computing, booting is starting up a computer or computer appliance until it can be used.

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Brookhaven National Laboratory

Brookhaven National Laboratory (BNL) is a United States Department of Energy national laboratory located in Upton, New York, on Long Island, and was formally established in 1947 at the site of Camp Upton, a former U.S. Army base.

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Bucharest (București) is the capital and largest city of Romania, as well as its cultural, industrial, and financial centre.

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Bulgaria (България, tr.), officially the Republic of Bulgaria (Република България, tr.), is a country in southeastern Europe.

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Bus (computing)

In computer architecture, a bus (a contraction of the Latin omnibus) is a communication system that transfers data between components inside a computer, or between computers.

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Byte (magazine)

Byte was an American microcomputer magazine, influential in the late 1970s and throughout the 1980s because of its wide-ranging editorial coverage.

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C (programming language)

C (as in the letter ''c'') is a general-purpose, imperative computer programming language, supporting structured programming, lexical variable scope and recursion, while a static type system prevents many unintended operations.

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The C.mmp was an early MIMD multiprocessor system developed at Carnegie Mellon University by William Wulf (1971).

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Carnegie Mellon University

Carnegie Mellon University (commonly known as CMU) is a private research university in Pittsburgh, Pennsylvania.

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Central processing unit

A central processing unit (CPU) is the electronic circuitry within a computer that carries out the instructions of a computer program by performing the basic arithmetic, logical, control and input/output (I/O) operations specified by the instructions.

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Compatibility mode

A compatibility mode is a software mechanism in which a software either emulates an older version of software, or mimics another operating system in order to allow older or incompatible software or files to remain compatible with the computer's newer hardware or software.

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Computer terminal

A computer terminal is an electronic or electromechanical hardware device that is used for entering data into, and displaying or printing data from, a computer or a computing system.

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A coprocessor is a computer processor used to supplement the functions of the primary processor (the CPU).

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CP/M, originally standing for Control Program/Monitor and later Control Program for Microcomputers, is a mass-market operating system created for Intel 8080/85-based microcomputers by Gary Kildall of Digital Research, Inc.

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CPU cache

A CPU cache is a hardware cache used by the central processing unit (CPU) of a computer to reduce the average cost (time or energy) to access data from the main memory.

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CSI-DOS is an operating system, created in Samara, for the Soviet Elektronika BK-0011M and Elektronika BK-0011 microcomputers.

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Current loop

In electrical signalling an analog current loop is used where a device must be monitored or controlled remotely over a pair of conductors.

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Data General

Data General was one of the first minicomputer firms from the late 1960s.

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Data General Nova

The Data General Nova is a series of 16-bit minicomputers released by the American company Data General.

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Datalogics is a computer software company formed in 1967 and based in Chicago.

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DataNet, or Sustainable Digital Data Preservation and Access Network Partner was a research program of the U.S. National Science Foundation Office of Cyberinfrastructure.

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A debugger or debugging tool is a computer program that is used to test and debug other programs (the "target" program).

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Debugging is the process of finding and resolving defects or problems within a computer program that prevent correct operation of computer software or a system.

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BATCH-11/DOS-11, also known simply as DOS-11, is a discontinued operating system by Digital Equipment Corporation (DEC) of Maynard, Massachusetts.

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DEC GT40 is an VT11 vector graphic terminal produced by the Digital Equipment Corporation, first introduced in October, 1972 (selling for “under $11,000”).

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DEC J-11

The J-11 is a microprocessor chip set that implements the PDP-11 instruction set architecture (ISA) jointly developed by Digital Equipment Corporation and Harris Semiconductor.

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DEC Professional (computer)

The Professional 325 (PRO-325) and Professional 350 (PRO-350) were PDP-11 compatible microcomputers introduced in 1982 by Digital Equipment Corporation (DEC) as high-end competitors to the IBM PC.

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DECtape (originally called Microtape) is a magnetic tape data storage medium used with many Digital Equipment Corporation computers, including the PDP-6, PDP-8, LINC-8, PDP-9, PDP-10, PDP-11, PDP-12, and the PDP-15.

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DEMOS (Dialogovaya Edinaya Mobilnaya Operatsionnaya Sistema: lit) was a Unix-like operating system developed in the Soviet Union.

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Dennis Ritchie

Dennis MacAlistair Ritchie (September 9, 1941 – October 12, 2011) was an American computer scientist.

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Digital Equipment Corporation

Digital Equipment Corporation, also known as DEC and using the trademark Digital, was a major American company in the computer industry from the 1950s to the 1990s.

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Direct memory access

Direct memory access (DMA) is a feature of computer systems that allows certain hardware subsystems to access main system memory (Random-access memory), independent of the central processing unit (CPU).

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Dot matrix printer

A dot matrix printer is an impact printer that prints using a fixed number of pins or wires.

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DVK (ДВК, Диалоговый вычислительный комплекс, Dialogue Computing Complex) is a Soviet PDP-11-compatible personal computer.

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East Germany

East Germany, officially the German Democratic Republic (GDR; Deutsche Demokratische Republik, DDR), existed from 1949 to 1990 and covers the period when the eastern portion of Germany existed as a state that was part of the Eastern Bloc during the Cold War period.

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Eastern Bloc

The Eastern Bloc was the group of socialist states of Central and Eastern Europe, generally the Soviet Union and the countries of the Warsaw Pact.

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Electronika 60

The Electronika 60 (Электроника 60) is a terminal computer made in the Soviet Union by Electronika in Voronezh.

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Electronika BK

The Electronika BK is a series of 16-bit PDP-11-compatible Soviet home computers developed under the Electronika brand by NPO Scientific Center, the leading Soviet microcomputer design team at the time.

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Embedded system

An embedded system is a computer system with a dedicated function within a larger mechanical or electrical system, often with real-time computing constraints.

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Englewood Cliffs, New Jersey

Englewood Cliffs is a borough in Bergen County, New Jersey, United States.

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Floating-point arithmetic

In computing, floating-point arithmetic is arithmetic using formulaic representation of real numbers as an approximation so as to support a trade-off between range and precision.

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Floppy disk

A floppy disk, also called a floppy, diskette, or just disk, is a type of disk storage composed of a disk of thin and flexible magnetic storage medium, sealed in a rectangular plastic enclosure lined with fabric that removes dust particles.

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Forth (programming language)

Forth is an imperative stack-based computer programming language and environment originally designed by Charles "Chuck" Moore.

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Fuzzball router

Fuzzball routers were the first modern routers on the Internet.

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Gordon Bell


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Hard disk drive

A hard disk drive (HDD), hard disk, hard drive or fixed disk is an electromechanical data storage device that uses magnetic storage to store and retrieve digital information using one or more rigid rapidly rotating disks (platters) coated with magnetic material.

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Hardware register

In digital electronics, especially computing, hardware registers are circuits typically composed of flip flops, often with many characteristics similar to memory, such as.

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Heathkit is the brand name of kits and other electronic products produced and marketed by the Heath Company.

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Heathkit H11

The Heathkit H11 Computer was an early kit-format personal computer introduced in 1978.

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Hungary (Magyarország) is a country in Central Europe that covers an area of in the Carpathian Basin, bordered by Slovakia to the north, Ukraine to the northeast, Austria to the northwest, Romania to the east, Serbia to the south, Croatia to the southwest, and Slovenia to the west.

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IBM Personal Computer

The IBM Personal Computer, commonly known as the IBM PC, is the original version and progenitor of the IBM PC compatible hardware platform.

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IBM Systems Network Architecture

Systems Network Architecture (SNA) is IBM's proprietary networking architecture, created in 1974.

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In computing, input/output or I/O (or, informally, io or IO) is the communication between an information processing system, such as a computer, and the outside world, possibly a human or another information processing system.

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Instruction set architecture

An instruction set architecture (ISA) is an abstract model of a computer.

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Integrated circuit

An integrated circuit or monolithic integrated circuit (also referred to as an IC, a chip, or a microchip) is a set of electronic circuits on one small flat piece (or "chip") of semiconductor material, normally silicon.

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Intel 80286

The Intel 80286 (also marketed as the iAPX 286 and often called Intel 286) is a 16-bit microprocessor that was introduced on 1 February 1982.

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Intel 80386

The Intel 80386, also known as i386 or just 386, is a 32-bit microprocessor introduced in 1985.

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Intel 8088

The Intel 8088 ("eighty-eighty-eight", also called iAPX 88) microprocessor is a variant of the Intel 8086.

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International Bell Telephone Company

The International Bell Telephone Company (IBTC) of Brussels, Belgium was created in 1879 by the Bell Telephone Company of Boston, Massachusetts, a precursor entity to AT&T, initially to sell imported telephones and switchboards in Continental Europe.

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In system programming, an interrupt is a signal to the processor emitted by hardware or software indicating an event that needs immediate attention.

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Interrupt priority level

The interrupt priority level (IPL) is a part of the current system interrupt state, which indicates the interrupt requests that will currently be accepted.

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Interrupt vector table

An "interrupt vector table" (IVT) is a data structure that associates a list of interrupt handlers with a list of interrupt requests in a table of interrupt vectors.

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IntervalZero, Inc. develops hard real-time software and its symmetric multiprocessing (SMP) enabled RTX and RTX64 software transform the Microsoft Windows general-purpose operating system (GPOS) into a real-time operating system (RTOS).

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J/psi meson

The (J/psi) meson or psion is a subatomic particle, a flavor-neutral meson consisting of a charm quark and a charm antiquark.

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The kilobyte is a multiple of the unit byte for digital information.

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The LINC (Laboratory INstrument Computer) is a 12-bit, 2048-word transistorized computer.

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Line printer

A line printer prints one entire line of text before advancing to another line.

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Linear particle accelerator

A linear particle accelerator (often shortened to linac) is a type of particle accelerator that accelerates charged subatomic particles or ions to a high speed by subjecting them to a series of oscillating electric potentials along a linear beamline.

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Logic gate

In electronics, a logic gate is an idealized or physical device implementing a Boolean function; that is, it performs a logical operation on one or more binary inputs and produces a single binary output.

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Machining is any of various processes in which a piece of raw material is cut into a desired final shape and size by a controlled material-removal process.

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MACRO-11 is an assembly language with macro facilities for PDP-11 minicomputers from Digital Equipment Corporation (DEC).

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Magnetic-core memory

Magnetic-core memory was the predominant form of random-access computer memory for 20 years between about 1955 and 1975.

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The Massbus is a high-performance computer input/output bus designed in the 1970s by the Digital Equipment Corporation of Maynard, Massachusetts.

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The MCP-1600 was a multi-chip microprocessor made by Western Digital in the late 1970s through the early 1980s.

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The megabyte is a multiple of the unit byte for digital information.

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Memory protection

Memory protection is a way to control memory access rights on a computer, and is a part of most modern instruction set architectures and operating systems.

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Memory-mapped I/O

Memory-mapped I/O (MMIO) and port-mapped I/O (PMIO) (which is also called isolated I/O) are two complementary methods of performing input/output (I/O) between the central processing unit (CPU) and peripheral devices in a computer.

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Mentec PDP-11

Mentec Limited was founded in 1978 and initially focused on the development of monitoring and control software and systems.

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Microcode is a computer hardware technique that imposes an interpreter between the CPU hardware and the programmer-visible instruction set architecture of the computer.

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The micrometre (International spelling as used by the International Bureau of Weights and Measures; SI symbol: μm) or micrometer (American spelling), also commonly known as a micron, is an SI derived unit of length equaling (SI standard prefix "micro-".

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Microsoft Corporation (abbreviated as MS) is an American multinational technology company with headquarters in Redmond, Washington.

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A minicomputer, or colloquially mini, is a class of smaller computers that was developed in the mid-1960s and sold for much less than mainframe and mid-size computers from IBM and its direct competitors.

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MK-DOS was one of the most widespread operating systems for Elektronika BK personal computers, developed by Mikhail Korolev and Dmitriy Butyrskiy from 1in Like ANDOS, the system provided full compatibility for all models, emulating the BK-0010 environments on the more modern BK-0011 and BK-0011M machines.

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MONECS ('''Mon'''ash University Educational Computing System) was a computer operating system with BASIC, COBOL, FORTRAN, Pascal interpreters, plus machine language facility.

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Motorola 68000

The Motorola 68000 ("'sixty-eight-thousand'"; also called the m68k or Motorola 68k, "sixty-eight-kay") is a 16/32-bit CISC microprocessor, which implements a 32-bit instruction set, with 32-bit registers and 32-bit internal data bus, but with a 16-bit data ALU and two 16-bit arithmetic ALUs and a 16-bit external data bus, designed and marketed by Motorola Semiconductor Products Sector.

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MS-DOS (acronym for Microsoft Disk Operating System) is an operating system for x86-based personal computers mostly developed by Microsoft.

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Multi-Environment Real-Time

Multi-Environment Real-Time (MERT) was a hybrid time-sharing/real-time operating system developed in the 1970s at Bell Labs for use in embedded minicomputers (in particular PDP-11s).

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MUMPS (Massachusetts General Hospital Utility Multi-Programming System), or M, is a general-purpose computer programming language that provides ACID (Atomic, Consistent, Isolated, and Durable) transaction processing.

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Nesting (computing)

In computing science and informatics, nesting is where information is organized in layers, or where objects contain other similar objects.

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Niche market

A niche market is the subset of the market on which a specific product is focused.

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Nobel Prize

The Nobel Prize (Swedish definite form, singular: Nobelpriset; Nobelprisen) is a set of six annual international awards bestowed in several categories by Swedish and Norwegian institutions in recognition of academic, cultural, or scientific advances.

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Numerical control

Computer numerical control (CNC) is the automation of machine tools by means of computers executing pre-programmed sequences of machine control commands.

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The octal numeral system, or oct for short, is the base-8 number system, and uses the digits 0 to 7.

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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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Original equipment manufacturer

An Original Equipment Manufacturer (OEM) is a company that produces parts and equipment that may be marketed by another manufacturer.

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Orthogonal instruction set

In computer engineering, an orthogonal instruction set is an instruction set architecture where all instruction types can use all addressing modes.

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The PDP-10 is a mainframe computer family manufactured by Digital Equipment Corporation (DEC) from 1966 into the 1980s.

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

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The PDP-11/73 (strictly speaking, the MicroPDP-11/73) was the third generation of the PDP-11 series of 16-bit minicomputers produced by Digital Equipment Corporation to use LSI processors.

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The PDP-4 was the successor to the Digital Equipment Corporation's PDP-1.

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The PDP-5 was Digital Equipment Corporation's first 12-bit computer, introduced in 1963.

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The PDP-8 was a 12-bit minicomputer produced by Digital Equipment Corporation (DEC).

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Per Brinch Hansen

Per Brinch Hansen (November 13, 1938 – July 31, 2007) was a Danish-American computer scientist known for his work in operating systems, concurrent programming and parallel and distributed computing.

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A peripheral device is "an ancillary device used to put information into and get information out of the computer." Three categories of peripheral devices exist based on their relationship with the computer.

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Pilkington Group Limited is a multinational glass-manufacturing company headquartered in St Helens, United Kingdom and a wholly owned subsidiary of the Japan-based NSG Group.

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PL-11 is a high-level machine-oriented programming language for the PDP-11, developed by R.D. Russell of CERN in 1971.

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Poland (Polska), officially the Republic of Poland (Rzeczpospolita Polska), is a country located in Central Europe.

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Position-independent code

In computing, position-independent code (PIC) or position-independent executable (PIE) is a body of machine code that, being placed somewhere in the primary memory, executes properly regardless of its absolute address.

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Power-on self-test

A power-on self-test (POST) is a process performed by firmware or software routines immediately after a computer or other digital electronic device is powered on.

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Prentice Hall

Prentice Hall is a major educational publisher owned by Pearson plc.

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Printed circuit board

A printed circuit board (PCB) mechanically supports and electrically connects electronic components or electrical components using conductive tracks, pads and other features etched from one or more sheet layers of copper laminated onto and/or between sheet layers of a non-conductive substrate.

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Process control

Automatic process control in continuous production processes is a combination of control engineering and chemical engineering disciplines that uses industrial control systems to achieve a production level of consistency, economy and safety which could not be achieved purely by human manual control.

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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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Punched card

A punched card or punch card is a piece of stiff paper that can be used to contain digital data represented by the presence or absence of holes in predefined positions.

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Punched tape

Punched tape or perforated paper tape is a form of data storage, consisting of a long strip of paper in which holes are punched to store data.

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The Q-bus (also known as the LSI-11 Bus) is one of several bus technologies used with PDP and MicroVAX computer systems previously manufactured by the Digital Equipment Corporation of Maynard, Massachusetts.

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Real-time computing

In computer science, real-time computing (RTC), or reactive computing describes hardware and software systems subject to a "real-time constraint", for example from event to system response.

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The RK05 DECpack was a moving head magnetic disk drive manufactured by the Digital Equipment Corporation of Maynard, Massachusetts.

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RL01 and RL02 drives are moving head magnetic disk drives manufactured by Digital Equipment Corporation for the PDP-8 and PDP-11 microcomputers.

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Romania (România) is a sovereign state located at the crossroads of Central, Eastern, and Southeastern Europe.

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Router (computing)

A router is a networking device that forwards data packets between computer networks.

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In telecommunications, RS-232, Recommended Standard 232 is a standard introduced in 1960 for serial communication transmission of data.

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RSTS is a multi-user time-sharing operating system, initially developed by Evans, Griffiths, & Hart of Boston, and acquired by Digital Equipment Corporation (DEC, now part of Hewlett Packard) for the PDP-11 series of 16-bit minicomputers.

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RSX-11 is a discontinued family of multi-user real-time operating systems for PDP-11 computers created by Digital Equipment Corporation.

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RT-11 ("RT" for real-time) is a discontinued small, single-user real-time operating system for the Digital Equipment Corporation PDP-11 family of 16-bit computers.

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RTL/2 was a high-level programming language developed at Imperial Chemical Industries Ltd by J.G.P. Barnes.

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Samuel C. C. Ting

Samuel Chao Chung Ting (born January 27, 1936) is an American physicist who received the Nobel Prize in 1976, with Burton Richter, for discovering the subatomic J/ψ particle.

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Serial port

In computing, a serial port is a serial communication interface through which information transfers in or out one bit at a time (in contrast to a parallel port).

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SIMH is a highly portable, multi-system emulator which runs on Windows, Linux, Mac OS X, FreeBSD, OpenBSD, NetBSD and OpenVMS.

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The SM-1420 (CM-1420) was a PDP-11/34+ clone, and the successor to SM-4 in Soviet Bloc countries.

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The SM-4 (CM-4) was a PDP-11/40 compatible system, manufactured in the Eastern Bloc in the 1980s.

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Soviet Union

The Soviet Union, officially the Union of Soviet Socialist Republics (USSR) was a socialist state in Eurasia that existed from 1922 to 1991.

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A superminicomputer, or supermini, was “a minicomputer with high performance compared to ordinary minicomputers.” The term was an invention used from the mid-1970s mainly to distinguish the emerging 32-bit minis from the classical 16-bit minicomputers.

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System bus

A system bus is a single computer bus that connects the major components of a computer system, combining the functions of a data bus to carry information, an address bus to determine where it should be sent, and a control bus to determine its operation.

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Teradyne, based in North Reading, Massachusetts in the United States, is a developer and supplier of automatic test equipment (ATE).

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Terminal server

A terminal server enables organizations to connect devices with an RS-232, RS-422 or RS-485 serial interface to a local area network (LAN).

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Texas Instruments

Texas Instruments Inc. (TI) is an American technology company that designs and manufactures semiconductors and various integrated circuits, which it sells to electronics designers and manufacturers globally.

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The Therac-25 was a radiation therapy machine produced by Atomic Energy of Canada Limited (AECL) in 1982 after the Therac-6 and Therac-20 units (the earlier units had been produced in partnership with CGR of France).

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In general terms, throughput is the maximum rate of production or the maximum rate at which something can be processed.

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In computing, time-sharing is the sharing of a computing resource among many users by means of multiprogramming and multi-tasking at the same time.

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Timișoara (Temeswar, also formerly Temeschburg or Temeschwar; Temesvár,; טעמשוואר; Темишвар / Temišvar; Banat Bulgarian: Timišvár; Temeşvar; Temešvár) is the capital city of Timiș County, and the main social, economic and cultural centre in western Romania.

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Transistor–transistor logic

Transistor–transistor logic (TTL) is a logic family built from bipolar junction transistors.

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TRIPOS (TRIvial Portable Operating System) is a computer operating system.

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TSX-Plus is a multi-user operating system for the PDP-11/LSI-11 series of computers.

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UCSD Pascal

UCSD Pascal was a Pascal programming language system that ran on the UCSD p-System, a portable, highly machine-independent operating system.

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UKNC (УКНЦ) was a Soviet PDP-11-compatible educational computer, aimed at teaching school informatics courses.

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Ultrix (officially all-caps ULTRIX) is the brand name of Digital Equipment Corporation's (DEC) discontinued native Unix operating systems for the PDP-11, VAX and DECstations.

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The Unibus was the earliest of several computer bus and backplane designs used with PDP-11 and early VAX systems manufactured by the Digital Equipment Corporation (DEC) of Maynard, Massachusetts.

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Unimation was the world's first robotics company.

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Uniprocessor system

A uniprocessor system is defined as a computer system that has a single central processing unit that is used to execute computer tasks.

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University of Illinois at Urbana–Champaign

The University of Illinois Urbana–Champaign (also known as U of I, Illinois, or colloquially as the University of Illinois or UIUC) is a public research university in the U.S. state of Illinois and the flagship institution of the University of Illinois System.

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Unix (trademarked as UNIX) is a family of multitasking, multiuser computer operating systems that derive from the original AT&T Unix, development starting in the 1970s at the Bell Labs research center by Ken Thompson, Dennis Ritchie, and others.

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UNIX System III (or System 3) is a discontinued version of the Unix operating system released by AT&T's Unix Support Group (USG).

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VAX is a discontinued instruction set architecture (ISA) developed by Digital Equipment Corporation (DEC) in the mid-1970s.

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VAX 8000

The VAX 8000 is a discontinued family of minicomputers developed and manufactured by Digital Equipment Corporation (DEC) using processors implementing the VAX instruction set architecture (ISA).

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The VAX-11 is a discontinued family of minicomputers developed and manufactured by Digital Equipment Corporation (DEC) using processors implementing the VAX instruction set architecture (ISA).

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The VAXBI bus (VAX Bus Interconnect bus) is a computer bus designed and sold by the Digital Equipment Corporation (DEC) of Maynard, Massachusetts.

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Vector graphics

Vector graphics are computer graphics images that are defined in terms of 2D points, which are connected by lines and curves to form polygons and other shapes.

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Venix is a discontinued version of the Unix operating system for low-end computers, developed by VenturCom, a "company that specialises in the skinniest implementations of Unix".

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Version 6 Unix

Sixth Edition Unix, also called Version 6 Unix or just V6, was the first version of the Unix operating system to see wide release outside Bell Labs.

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Version 7 Unix

Seventh Edition Unix, also called Version 7 Unix, Version 7 or just V7, was an important early release of the Unix operating system.

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The VT05 was the first free-standing CRT computer terminal from Digital Equipment Corporation introduced in 1970.

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The VT100 is a video terminal, introduced in August 1978 by Digital Equipment Corporation (DEC).

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The VT50 was a CRT-based computer terminal introduced by Digital Equipment Corporation (DEC) in July 1974.

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Western Digital

Western Digital Corporation (abbreviated WDC, commonly shortened to Western Digital or WD) is an American computer data storage company and one of the largest computer hard disk drive manufacturers in the world, along with its main competitor Seagate Technology.

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Wire wrap

Wire wrap was invented to wire telephone crossbar switches, and later adapted to construct electronic circuit boards.

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Word (computer architecture)

In computing, a word is the natural unit of data used by a particular processor design.

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X.25 is an ITU-T standard protocol suite for packet switched wide area network (WAN) communication.

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x86 is a family of backward-compatible instruction set architectures based on the Intel 8086 CPU and its Intel 8088 variant.

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Xenix is a discontinued version of the Unix operating system for various microcomputer platforms, licensed by Microsoft from AT&T Corporation in the late 1970s.

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Xinu Is Not Unix (Xinu, a recursive acronym), is an operating system for embedded systems, originally developed by Douglas Comer for educational use at Purdue University in the 1980s.

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Year 2000 problem

The Year 2000 problem, also known as the Y2K problem, the Millennium bug, the Y2K bug, or Y2K, is a class of computer bugs related to the formatting and storage of calendar data for dates beginning in the year 2000.

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16-bit microcomputers are computers in which 16-bit microprocessors were the norm.

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9 track tape

The IBM System/360, released in 1964, introduced what is now generally known as 9 track tape.

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Redirects here:

DEC PDP-11, DECSA, DL11, DL11-W, Decsa, KL11, LSI-11, Micro PDP-11, Micro pdp-11, PC11, PDP 11, PDP 11/45, PDP eleven, PDP-11/20, PDP-11/40, PDP-11/45, PDP-11/70, PDP11, PR11, Pdp-11, RX01.


[1] https://en.wikipedia.org/wiki/PDP-11

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