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Pdp 11 computer. The PDP-11 was an instant success.
- Pdp 11 computer. Overview of PDP-11 hardware and instruction set architecture, including the new (at the time) LSI-11 systems, Unibus and LSI-Bus (Q-Bus). Chaosnet support has been added to the PDP-10 and PDP-11. [2] Though not explicitly conceived as successor to DEC's PDP-8 computer in the PDP series of computers (both product lines lived in parallel for more than 10 years), the PDP-11 replaced the PDP-8 in many real-time applications. Obwohl nicht explizit als Nachfolger konzipiert, löste er bei vielen Anwendungen in der Prozessrechentechnik den vorher dominierenden 12-Bit-Computer PDP-8 aus der Programmed-Data-Processor -Reihe ab. Shop for pdp 11 computer at Best Buy. Fast & Free shipping on many items! Get the best deals on DEC Vintage Computers and Mainframes and find everything you'll need to improve your home office setup at eBay. Shop now for fast shipping and easy returns! The Heathkit H11 Computer is an early kit -format personal computer introduced in 1978. 12-5 This release is mostly bug fixes, particularly in the PDP-11 and Sigma simulators. Sep 13, 2004 · The "computer on a board" provided greater performance than the PDP-11/20 and maintained compatibility with the PDP-11 systems that preceded it. 6-10, 1998. But it was being leap-frogged by 16-bit machines from competitors such as Honeywell, Data General, Hewlett-Packard, and a host of startups. The H11 is one of the first 16-bit personal computers, at a list price of US$1,295, [2] (equivalent to $6,243 in 2024) but it also requires at least a computer terminal and some form of storage to make it useful LK40 keyboard VR14-LC X-Y monitor (or -LD for 230 V) 375 light pen Because the GT40 contained a PDP-11 class computer, the terminal could also serve as a computer in its own right, IEEE Computer wrote: [1] The GT40 may be used either as a stand-alone graphics system or as a remote terminal interacting with various types of host computers. Apr 11, 2020 · This PDP-11/34 was the first PDP-11 in my collection, and the second computer, overall. Run original Unix, RSX-11M, and classic software. Tous les PDP-11 sont 16 bits et entrent dans la classe des mini-ordinateurs. Oct 7, 2024 · The PDP-11 software itself is executed using SimH (History Simulator), a collection of simulators for historic computer systems. The PDP-11 was an instant success. The PDP-11 also had a role in electronic engine control systems used in automobiles. History Video DEC and the PiDP-11 Soviet PDP-11 ДВК-3 Programming the PDP-11 PDP-11/45 running Adventure on LA30 Installing RT-11 5. The influence of the PDP-11 is still felt today as it has influenced tons of other machines. The PDP-11/40, introduced in 1973, was the second machine to support 18-bit main memory addressing on the PDP-11 platform, after the PDP-11/45 (albeit with a subset of the PDP-11 Memory Management architecture). Includes information about specific families and models, and differences between them. Everything that is needed to run a PDP-11 system is included; you can run a complete PDP-11 system with console, disks and other peripherals on a simple low cost FPGA development board. The acronym 'PDP Get the best deals on Pdp 11 In Vintage Computer Parts & Accessories and find everything you'll need to improve your home office setup at eBay. PDP-11 Programming LanguagesVisit count: The PDP-11 was Digital's successor to the hugely successful PDP-8. Get the best deals for Vintage Pdp-11 Computer at eBay. The DEC PDP series of minicomputers occupy a special place in computing history for us, because as the workhorses of commercial Explore a wide range of our Pdp 11 Computer selection. The PDP-11 replaced the PDP-8 in many real-time applications, although both product lines lived in parallel for more than 10 years. Like a proper LSI-11, the computer uses the DEC QBus. This page is dedicated to Digital Equipment Corporation's PDP-11 Line of Minicomputers, particularly the PDP-11/44. Many Americans were introduced to The PDP-11/03, which initially shipped with the new LSI-11 CPU, marked a major change in the PDP-11 family in two ways: it was the first PDP-11 to essentially use a microprocessor (although the LSI-11 chip set was 4 chips, not 1, it was effectively a microprocessor); it was the first to use a new system bus, the QBUS, which used fewer lines (thus allowing cards which plugged into QBUS The PDP-11 was probably the most influential computer ever. It then describes how to load and run PDP-11 BASIC on real PDP-11 hard… The PDP-11/44 was a high performance UNIBUS PDP-11 system; in some senses a lower-cost successor to the PDP-11/70, although without the very high main memory bandwidth and I/O bandwidth to mass storage of the -11/70, as it lacked the latter's Main Memory Bus and integrated MASSBUS, relying instead on the UNIBUS, and EUB. com May 23, 2025 · The DEC PDP-11 computer was the world’s best-selling computer in 1980. Early PDP-11 models were not overly impressive. 272 pages plus appendices, glossary and index. The PDP-11 is a series of 16-bit minicomputers originally sold by Digital Equipment Corporation (DEC) from 1970 into the late 1990s, one of a set of products in DEC order number EB-23657-18. The PDP-11/83 is the QBUS -only system using the PMI -capable KDJ11-B CPU board in a Q/CD backplane, along with PMI-capable memory; its UNIBUS -capable twin is the PDP-11/84. Explore a wide range of our Pdp-11 Computer selection. (Specifically, we used the PDP-11/10 as the xiii XIV Preface hine, and the PDP-11/70, equipped with the ty, and the wide range ofavail-able software systems. It defined what we think of as normal, it was the first machine you could get Unix for, and Windows can trace its roots to the PDP-11's other big-ticket operating system, RSX-11. Kit $270, assembled $395. . Stackosaurus PDP-11 Architecture PDP-11 Overview In the days before the microcomputer revolution, Digital Equipment Corporation's (DEC's) PDP-11 was one of the most popular minicomputers of all time. The C programming language was written to take advantage of PDP-11 features to rewrite Unix in a high Get the best deals on pdp 11 when you shop the largest online selection at eBay. In this article, we present a simulator for a PDP-11 computer that uses a GUI-based interface and a built-in assembler, and we argue that its use in computer organization courses can enhance student understanding for machine-level programming. Shop with confidence. These 16-bit minicomputers ("mini" as opposed to the room-sized mainframe computers of the 1950s and '60s) were relatively inexpensive and were used for business (payroll, accounting), scientific, educational, and timesharing purposes. PDP2011 Overview This website describes PDP2011 – a re-creation of the well known series of PDP-11 computer systems in VHDL. In total, around 600,000 PDP-11s of all models were sold, and a wide variety of third-party peripheral vendors had also entered the computer product ecosystem. <p>All models of the PDP-11 family could run the same software. The PDP-11 architecture[1] is a 16-bit CISC instruction set architecture (ISA) developed by Digital Equipment Corporation (DEC). The name was dropped starting with the VAX. The PDP-11/20 was the first PDP-11 from DEC; its KA11 CPU was built from a set of quad width extended-length cards carrying SSI TTL chips, along with a few dual width cards. Bell, W. The PDP-11 was a little-endian machine, concerning the byte-order of 16-bit words in memory [2]. Jan 8, 2010 · It 'captures in hardware' the ITS Reconstruction Project of Lars Brinkhoff et al. Historically, Digital Equipment Corporation’s PDP-8 Family, with 6,000 installations has been the archetype of these mini- computers. , a used Digital Equipment dealer in the Minneapolis, MN area. We have a great online selection at the lowest prices with Fast & Free shipping on many items! Black and white. Dec 4, 2017 · C. Strecker, “Retrospective: what have we learned from the PDP-11—what we have learned from VAX and Alpha”, Proceedings of the 25th Annual International Symposium on Computer Architecture, pp. Users can mix bipolar, metal oxide semiconductor (M Mar 8, 2022 · Posted in Retrocomputing Tagged computer history, DEC, Digital Equipment Corporation, pdp-11, replica ← Grid Batteries On Wheels: The Complicated Logistics Of Vehicle-Grid Integration The PDP-11 was a series of 16-bit minicomputers sold by Digital Equipment Corp. hu Quote: Introduced in 1979. The language C is said to have been influenced by the programming environment of the PDP-11, and the PDP-11 was the second computer to run Unix - and the system that launched it to stratospheric heights of popularity. This powerful, low-priced machine is packaged in a 21·'' front panel slide chassis, allowing convenient access and expansion when mounted in a standard rack. This was the king of all minicomputers, and once you get past the amazing front panels of the 11/20, 11/40, and 11/70, you’ll fin… The PDP-11 was an extremely successful and influential family of machines which has spanned over two decades from the early 1970s through the mid 1990s. , a used Digital Equipment dealer. The greatest historical significance was that the PDP-8's low cost and high volume made a computer available to many new customers for many new uses. The PDP-11 was used by Ford Motor Company as a base to create the EEC and EEC-II control modules in the late 1970s. Shop now for fast shipping and easy returns! Die PDP-11 war ein 1970 eingeführter, in den 1970er Jahren weit verbreiteter 16-Bit - Computer der Digital Equipment Corporation. The PDP-11/23-PLUS, introduced in November 1981, introduced an integrated solution on a single quad -width QBUS board, which included F-11 CPU, memory management unit, a socket for inserting an KEF11-A floating point unit, and two asynchronous serial lines, which had a maximum speed of 19,200 baud. The PDP-11 is considered by some experts to be the most popular minicomputer See full list on arstechnica. The PDP-11 was an influential and widely-used family of 16- bit minicomputers designed by DEC, in production from 1970-1990. The PDP-11/70 was a very high performance UNIBUS PDP-11 system; it basically took the high-performance CPU of the PDP-11/45 (implemented in SSI Schottky TTL logic), and augmented it with: A 2 Kbyte, 300 nsec cache, organized as 2-way set associative, with 4-byte blocks, connected to what had been the FastBus high-speed memory interface on the PDP-11/45 CPU The ability to support up to 4 Mbytes The PDP-11 was an extremely successful and influential family of machines which has spanned over two decades from the early 1970s through the mid-1990s. [4][5][6] 1970s models and beyond were marketed under the DECsystem-10 name, especially as the TOPS-10 operating system became widely used PDP-1 PDP-6 PDP-7 PDP-8/e PDP-11/40 PDP-12 PDP-15 (partial) PDP-15 graphics terminal with and Programmed Data Processor (PDP), referred to by some customers, media and authors as " Programmable Data Processor," [1][2][3] is a term used by the Digital Equipment Corporation from 1957 to 1990 for several lines of minicomputers. Its clean internal architecture, with multiple general-purpose internal registers, was more like a mainframe computer than earlier minicomputers. . The PDP-11 had several uniquely innovative features, and was easier to program than its PDP-10 systems on the ARPANET highlighted in yellow Digital Equipment Corporation (DEC)'s PDP-10, later marketed as the DECsystem-10, is a mainframe computer family [1] manufactured from 1966, [2] delivered from December 1967, [3] and discontinued in 1983. The PDP-11 was a 16 bit machine and was launched in 1970. PDP-11 family of computers. It is implemented by central processing units (CPUs) and microprocessors used in PDP-11 minicomputers. By the late 1980's, they easily fit on a desktop. Fast & Free shipping on many items! Oct 6, 2016 · PCjs Blog Introducing PDPjs for the DEC PDP-11 PDPjs, a new DEC PDP-11 emulator, is the newest addition to the PCjs family of emulators, joining PCx86, PCx80, and C1Pjs. The PiDP-11 wants to bring back the experience of PDP-11 Blinkenlights The pdp11/70 was a cost-effective solution to large-scale computer systems. The low complexity brought other costs. Sep 16, 2024 · One of the most iconic mini computers was the DEC PDP-11, which became widely used in academic institutions and research labs. Its success paved the way for further advancements in mini computer technology and influenced the development of future computing systems. It was the only PDP-11 to use discrete logic for its control circuits, as opposed to microcode (this was because the cheap Build or buy an authentic PDP-11/70 replica. Many small computer graphics labs could now have a dedicated computer on which to experiment with new software and hardware. Digital Equipment Corporation's PDP 11 computers were popular, widely used machines in the era before personal computers. The objective of This Handbook describes the PDP-11/40, one of the latest computers in the PDP-11 family from Digital Equipment Corporation (DEC). We have a great online selection at the lowest prices with Fast & Free shipping on many items! The PDP-11 was an extremely successful and influential family of machines which has spanned over two decades from the early 1970s through the mid 1990s. Intended as the successor of the PDP-11/03. [4] The name "PDP" intentionally avoids the use of the term "computer May 29, 2021 · Introduction The DEC (Digital Equipment Corportation) PDP-11 is now a favourite with vintage computer enthusiasts, for several reasons: Feb 4, 2024 · 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. It was purchased from Midwest Systems, Inc. The first PDP-11 11/20 cost $20,000, but it shipped with only about 4KB of RAM. So it not only boots up TOPS-10 and ITS, but the hard disk images contain more than 400 programs; PDP-11 and PDP-6 simulators are part of the simulation package. The PDP-11/94 is the newest and most powerful member of the PDP-11 family of multiuser systems. It is essentially a Digital Equipment PDP-11 in a small-form-factor case, designed by Heathkit. The mini-computer** has a wide variety of uses: com- munications controller; instrument controller; large- system pre-processor; real-time data acquisition systems . The PDP-11/03 is a complete and powerful mini-computer on four integrated circuit chips. Explore a unique selection of vintage DEC Digital Equipment PDP 11 computers, including panels and expansion cards. </p> Apr 26, 2018 · The PDP-11 is perhaps the most important computer in history. Learn about the PDP-11, a series of minicomputers introduced in 1969 by DEC and widely used for UNIX and other operating systems. The PDP-10 was the only mainframe ever that became a playground for hackers. A) only 18 lines were used. Navigate through its extraordinary journey & challenges. The first officially named version of Unix ran on the PDP-11/20 in 1970. from 1970 [1][2] into the 1990s. This guide carefully outlines the correct history. The other PDP families which became actual products for DEC (most included more than one model) were: A number of other PDPs never existed as real machines, are misnomers, or jokes: Jul 3, 2016 · Introduction This page provides an overview of PDP-11 paper tape BASIC, and the computer equipment it was typically used with. The OEM version of the -11/40 is the PDP-11/35; the machines are completely identical, except for the printing on the front panel inlay. Even Heathkit produced a PDP-11 home computer using an 'LSI' chip, and running their version of the RT-11 operating system. Reportedly, 600,000 units were sold over its long life, and it was the tool of choice for countless computing innovations, including the creation of UNIX and the C programming language. Learn about the PDP-11 series of 16-bit minicomputers produced by DEC and Mentec from 1970 to 1990. Get the best deals for Pdp-11 at eBay. In total, around 600,000 PDP-11s of all models were sold, making it one of DEC's most successful product lines. Our machine has 8k 16-bit words of core memory and is equipped with a fast papertape reader/punch, an RK-05 cartridge disk unit, a PDP-11, a series of 16-bit minicomputers manufactured and sold by Digital Equipment Corporation from 1970 into the 1990s. On the software front, native PDP-11 operating systems inspired the popular microcomputer OSes CP/M and DOS. Its continuing significance is as a historical example of value-engineered [11] computer design. The PDP-11/40 was designed to fit a broad range of applications, from small stand alone situations where The PDP-11/50 and PDP-11/55 were systems which used the exact same processor, but were sold pre-configured with the special high-speed MS11 Semiconductor Memory System (specific to the PDP-11/45), using 350 nsec MOS or 300 nsec bipolar memory, respectively. Ships worldwide with Raspberry Pi included. 11 operating system. DEC PDP-9 Arguably the most important computer in the PDP series was the PDP-11, which switched to a 16-bit word once everyone in the computer industry started using ASCII. W students to the ever-widening world of minicomputers. Well, technically, it is an LSI-11 but still. DEC responded successfully with family of 16-bit computers, starting with the PDP-11/20, introduced in 1970 for $10,800. com. The PDP-11 was 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. Some experts consider it the most successful computer of all time. Learning PDP-11 retro computing by deep diving into PDP-11 code and features to understand how they work, with step-by-step code walkthroughs. The PDP-11 is considered by some experts to be the most popular minicomputer Mar 1, 2020 · The PDP-11 was DEC’s first 16-bit computer and cost $20,000 when released in 1970. The PDP-11 was a 16 The PDP-11 was an extremely successful and influential family of machines which has spanned over two decades from the early 1970s through the mid 1990s. It covers hardware introduction and assembly, software configuration, and running Hello World program on vintage BSD 2. The evolution of the PDP-11 followed earlier systems, eventually including a single-user deskside personal computer form, the MicroPDP-11. Based on the F-11 chip set, it had a dual-height KDF11-A CPU card. Find low everyday prices and buy online for delivery or in-store pick-up This is the current project at the Rhode Island Computer Museum. Although the basic address space was 16 bits, most models could hold more main memory than that, although only a limited subset was visible to the program at any time. PDP-11 assembly looks to me like an oddly familiar mix of 68000 and 8086 code - and it isn't a coincidence, since both (especially the x86) were in many ways inferior copies of the PDP-11. These chips provide over 400 instructions in an addressing and I/O structure usually found only in much larger and more costly May 21, 2025 · This page presents information on software and hardware solutions enabling you to use PDP-11 software on contemporary platforms. Nov 23, 2021 · He recently picked up a Heathkit H11A which, as you might remember, is actually a PDP-11 from DEC. Un PDP-11 est un modèle d' ordinateur de la gamme des PDP (Programmable Data Processor) construit par Digital Equipment Corporation (DEC) entre 1970 et 1993. The PDP-11/93 was part of the last generation of DEC-produced PDP-11 's; it was QBUS only, its UNIBUS -capable twin being the PDP-11/94. SimH V3 supports a variety of DEC systems, including PDP-11 and VAX-11, as well as a multitude of machines from IBM, Hewlett-Packard, Xerox Data Systems, Altair, Honeywell and others. The PDP-11/40 (1973) is the direct descendant (in the equal-cost/increasing-functionality line) of the PDP-11/20, the root of the PDP-11 family tree. In the year 1994, DEC sold the PDP-11 product line to an Irish Company called Mentec Inc. D. Typed description attached to image: "Digital Equipment Corporation's new PDP-11/45, shown above in a system configuration, offers users features usually found ny in larger, more expensive systems. Our machine is the Micro PDP-11/23 which offered "Minicomputer performance and software in a micro-sized package", but actually the machine was still quite a lump! DEC’s Minis Get BiggerDEC’s low-cost 12-bit PDP-8 computer line was groundbreaking. Tragically, DEC field service often removed the front panel in a later upgrade, leaving us staring at dull blank panels ever since. The PDP-8 combines low cost, [4] simplicity, expandability, and careful engineering for value. May 4, 2010 · PDP-11 An Introduction to System Programming - Based on the PDP11 CERN - PL-11: A programming Language for the DEC PDP-11 Computer Digital PDP11/70 Processor Handbook 1975 The PDP-11 architecture, introduced in 1970, was designed to cover a wide range of price/functionality ratios. Find links to emulators, software, hardware, documentation, and other resources related to the PDP-11. The first PDP-11 in 1970 cost $10,800 and was DEC's first and only 16 bit computer. Both used the KDJ11-E CPU. This PDP-11/34 was the first PDP-11 in my collection, and the second computer, overall. In total, around 600,000 PDP-11s of all models were sold, making it one of DEC's most successful product lines Mar 15, 2022 · It would also greatly influence the next generation of computer architectures. By the end of production, DEC had sold over half a million of these machines according to Wikipedia. We are assembling a PDP-11/40 from lots of parts in the warehouse. Find top brands, exclusive offers, and unbeatable prices on eBay. 3 in simh (PDP-11) RT-11 bootup on UKNC Testing and First Boot of a Soviet PDP-11 Clone Computer Visit count: Mar 27, 2024 · Undoubtedly, the complete history of the DEC PDP-11 Computer is often misconstrued. While PDPjs may eventually support a range of DEC PDP machines, my current focus is on the PDP-11, starting with the PDP-11/70. It was in wide use during the 1970s, but was eventually overshadowed by the more powerful VAX architecture in the 1980s. The memory management was 22 bit (4MB address space), but in some revisions (KDF11-A Rev. A hands-on approach increases enthusiasm and understanding. Original PDP-11 computers were 'file cabinet' size. Aug 24, 2019 · A PDP-11 at The National Museum Of Computing, Bletchley, UK. Rediscover computing history on eBay! This page is dedicated to Digital Equipment Corporation's PDP-11 Line of Minicomputers, particularly the PDP-11/44. Jul 9, 2023 · A review on the PiDP-11 kit, a Raspberry Pi-based replica of the PDP-11 computer. G. Introduced in 1975, the 11/70 was top of the line in the famed PDP-11 range, and the very last system with a proper front panel. It was introduced in 1970 and production continued into the early 1990s. hampage. Cheaper than the IBM products, but with a powerful and versatile processor, the pdp11/70 was used for a huge variety of tasks. Get the best deals for Pdp-11 Computer at eBay. See the detailed revision histories in individual source code modules for details. Oct 22, 2017 · The PDP-11 also inspired the creation of operating systems like CP/M and MS-DOS. Explore how the PDP 11 minicomputer revolutionized computing access & faced obsolescence in the 1990s. Release Notes for V3. Free shipping on many items | Browse your favorite brands | affordable prices. Find great deals on eBay for Digital Pdp-11. This perticular systems specifications are largely unknown at this time. Eventually it will have a VT11/VR14 graphics display, a TU60 Learn about Digital Equipment Corporation's Programmed Data Processor-11 (PDP-11) which may have been the most popular minicomputer in history. Mar 23, 2025 · The PDP/11 did have some success because it was put on a chip that ended up in several lower-end machines, like the Heathkit H11. It made The museum acquired a mid 1980s DEC PDP-11/34A computer with a 512x512x24 bit color frame buffer that was used for early computer graphics research in Tek Labs. These large-scale-integrated circuits are mounted on a single 81⁄2 by 101⁄2 inch printed circuit board contained within a rack mountable 31⁄2 x 19 x 131⁄2 inch assembly. The PDP-11/94 features a new, performance-enhanced processor that combines the DCJ11/FPJ11 chip sets with 2 Mbyte or 4 Mbyte of high-speed onboard memory, eight buffered, programmable asynchronous serial lines and a time of year clock. Every system was custom-built to the required specifications. Ever wonder how people programmed the PDP computers with switches Aug 22, 2016 · Of note are a restoration of a PDP-11/04, this faithful reproduction of a PDP-11 panel emulated with the help of a Raspberry Pi, and an entire PDP-11 emulated on an AVR microcontroller. During the 22-year lifespan of the PDP-11—a tenure unheard of by today’s standards—more than 600,000 PDP-11s were sold. This year represents the 60th anniversary of the founding of the company that produced the PDP-11. We have a great online selection at the lowest prices with Fast & Free shipping on many items! Struggling with outdated PDP-11 systems? Discover whether to decommission or modernize to keep your legacy applications running smoothly. The CPU had 8 general purpose registers; the operand coding, which was applied regularly across Introduction The PiDP-11 is a modern replica of the PDP-11/70. The machine's 18-bit-address UNIBUS allowed it to have up to 256Kbytes of main memory. It introduced the UNIBUS as a universal path to connect together the CPU, main memory and devices. Oct 5, 2019 · The Digital Equipment Corporation 's PDP-11 ™ series were popular mini-computers in use from the early 1970's through the mid to late 1980's. The PDP-11 is a series of 16-bit minicomputers originally 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. Shop now for fast shipping and easy returns! The PDP–11 is a series of 16-bit minicomputer s originally 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. This is a great resource for studying and understanding how things were done on the bare-metal PDP-11. See the models, features, history and emulators of the PDP-11. ; desk calculator. The PDP-11/23 was the second QBUS PDP-11 system; it used the KDF11-A CPU (M8189). View of the PDP-11 system. bqnxv lxwqls z13uho 8sdtca lkt03 mfan 3mvs3 mrp ifs sr9vsz