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WDR 1-bit Computer
The MC14500B Industrial Control Unit (ICU) is a CMOS one-bit microprocessor designed by Motorola for simple control applications in 1977. Overview MC14500B (ICU) is well-suited to the implementation of ladder logic, and thus could be used to replace relay systems and programmable logic controllers, also intended for serial data manipulation. The processor supports 16 commands, operating at a frequency of 1 MHz. The MC14500B unit does not include a program counter (PC); instead, a clock signal drives a separate PC chip; therefore the size of supported memory is dependent on the implementation of that chip. It was still in production in 1995. The ICU architecture is similar to that of the DEC PDP-14 computer. Developers The ICU was conceived by Vern Gregory in the mid-1970s while working as an engineer in a marketing / applications group of Motorola Semiconductor Products Sector in Phoenix, Arizona, USA; Brian Dellande originated circuit and sub-routine designs, and ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
MC14500BCP
The MC14500B Industrial Control Unit (ICU) is a CMOS 1-bit architecture, one-bit microprocessor designed by Motorola for simple control applications in 1977. Overview MC14500B (ICU) is well-suited to the implementation of ladder logic, and thus could be used to replace relay systems and programmable logic controllers, also intended for serial data manipulation. The processor supports 16 commands, operating at a frequency of 1 MHz. The MC14500B unit does not include a program counter (PC); instead, a clock signal drives a separate PC chip; therefore the size of supported memory is dependent on the implementation of that chip. It was still in production in 1995. The ICU architecture is similar to that of the Digital Equipment Corporation, DEC PDP-14 computer. Developers The ICU was conceived by Vern Gregory in the mid-1970s while working as an engineer in a marketing / applications group of Motorola Semiconductor Products Sector in Phoenix, Arizona, USA; Brian Dellande ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Motorola, Inc
Motorola, Inc. () was an American multinational telecommunications company based in Schaumburg, Illinois, United States. After having lost $4.3 billion from 2007 to 2009, the company split into two independent public companies, Motorola Mobility and Motorola Solutions on January 4, 2011. Motorola Solutions is the legal successor to Motorola, Inc., as the reorganization was structured with Motorola Mobility being spun off. Motorola Mobility was acquired by Lenovo in 2014. Motorola designed and sold wireless network equipment such as cellular transmission base stations and signal amplifiers. Motorola's home and broadcast network products included set-top boxes, digital video recorders, and network equipment used to enable video broadcasting, computer telephony, and high-definition television. Its business and government customers consisted mainly of wireless voice and broadband systems (used to build private networks), and, public safety communications systems like Astro a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Motorola Semiconductor Products Inc
Motorola, Inc. () was an American multinational telecommunications company based in Schaumburg, Illinois, United States. After having lost $4.3 billion from 2007 to 2009, the company split into two independent public companies, Motorola Mobility and Motorola Solutions on January 4, 2011. Motorola Solutions is the legal successor to Motorola, Inc., as the reorganization was structured with Motorola Mobility being spun off. Motorola Mobility was acquired by Lenovo in 2014. Motorola designed and sold wireless network equipment such as cellular transmission base stations and signal amplifiers. Motorola's home and broadcast network products included set-top boxes, digital video recorders, and network equipment used to enable video broadcasting, computer telephony, and high-definition television. Its business and government customers consisted mainly of wireless voice and broadband systems (used to build private networks), and, public safety communications systems like Astro a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
NDR Computer
The NDR Klein Computer, abbreviated NKC, was a do-it-yourself computer project from the early 1980s developed by (RDK) and Joachim Arendt. In 1984, the computer was featured in the educational television series ''NDR-Klein-Computer'' for NDR-Schulfernsehen (NDR School Television). It was also broadcast on the computer television show ' on the Bavarian TV network Bayerisches Fernsehen (BFS). History The NDR Klein Computer was created by Rolf-Dieter Klein, a computer enthusiast who regularly contributed articles to the German computer magazine '' mc''. His plan was not only to give a basic introduction to the way a computer operates, but also to introduce a modular system through which laymen could learn to complete basic programming exercises, as well as acquire the skills to operate a high-end home computer. Under the direction of Joachim Arendt, they developed a television series that was picked up by Norddeutscher Rundfunk (NDR) for its NDR-Schulfernsehen (NDR School Televi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
WDR Computerclub , an annual report published since 1978 by the World Bank
{{disambiguation ...
WDR may refer to: * Waddell & Reed (stock ticker: WDR), an American asset management and financial planning company * Walt Disney Records, an American record label of the Disney Music Group * WDR neuron, a type of neuron involved in pain signalling * (German: 'West German Broadcasting'), a German public-broadcasting institution * Wet dress rehearsal, system tests of a fully integrated space launch vehicle * Wide dynamic range, a synonym of high dynamic range and HDR * Willo Davis Roberts (1928–2004), American writer * World Development Report The World Development Report (WDR) is an annual report published since 1978 by the International Bank for Reconstruction and Development (IBRD) or World Bank. Each WDR provides in-depth analysis of a specific aspect of economic development. Past ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
WDR Paper Computer
The WDR paper computer or Know-how Computer is an educational model of a computer consisting only of a pen, a sheet of paper, and individual matches in the most simple case. This allows anyone interested to learn how to program without having an electronic computer at their disposal. The paper computer was created in the early 1980s when computer access was not yet widespread in Germany, to allow people to familiarize themselves with basic computer operation and assembly-like programming languages. It was distributed in over copies and at its time belonged to the computers with the widest circulation. The Know-how Computer was developed by and Ulrich Rohde and was first presented in the television program WDR Computerclub in 1983. It was also published in German computer magazines mc and . The original printed version of the paper computer has up to 21 lines of code on the left and eight registers on the right, which are represented as boxes that contain as many matches as ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Westdeutscher Rundfunk
Westdeutscher Rundfunk Köln (''West German Broadcasting Cologne''; WDR, ) is a German public-broadcasting institution based in the Federal State of North Rhine-Westphalia with its main office in Cologne. WDR is a constituent member of the consortium of German public-broadcasting institutions, ARD. As well as contributing to the output of the national television channel '' Das Erste'', WDR produces the regional television service WDR Fernsehen (formerly known as WDF and West3) and six regional radio networks. History Origins The Westdeutsche Funkstunde AG (WEFAG) was established on 15 September 1924. There was a substantial purge of left wing staff following the Nazi seizure of power in 1933. This included Ernst Hardt, Hans Stein and Walter Stern. WDR was created in 1955, when Nordwestdeutscher Rundfunk (NWDR) was split into Norddeutscher Rundfunk (NDR) – covering Lower Saxony, Schleswig-Holstein, and Hamburg – and Westdeutscher Rundfunk, responsible for Nort ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Integrated Injection Logic
Integrated injection logic (IIL, I2L, or I2L) is a class of digital circuits built with multiple collector bipolar junction transistors (BJT). When introduced it had speed comparable to TTL yet was almost as low power as CMOS, making it ideal for use in VLSI (and larger) integrated circuits. The gates can be made smaller with this logic family than with CMOS because complementary transistors are not needed. Although the logic voltage levels are very close (High: 0.7V, Low: 0.2V), I2L has high noise immunity because it operates by current instead of voltage. I2L was developed in 1971 by Siegfried K. Wiedmann and Horst H. Berger who originally called it merged-transistor logic (MTL). A disadvantage of this logic family is that the gates draw power when not switching unlike with CMOS. Construction The I2L inverter gate is constructed with a PNP common base current source transistor and an NPN common emitter open collector inverter transistor (i.e. they are connected to the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
PDP-14
The PDP-14 was a specialized computer from Digital Equipment Corporation’s Industrial Products Group designed to replace industrial level relay controls for machinery and machine tools that performed repetitive tasks. It was specifically designed to function in the harsh electrical environment encountered in facilities where electric motors, solenoids and arc welders were present, a significant adversity for normal computer electronics. The PDP-14 was specifically designed to be the first level of factory automation, functioning as a programmable logic controller (PLC), through its ability to communicate with a standard DEC PDP-8 minicomputer. U.S patent, #3,753,243 was issued on August 14, 1973 to Alan Ricketts, Allan Devault, Russel Doane, John Dumser, John Holzer and assigned to Digital Equipment Corp. The PDP-14 was designed to process Boolean equations, usually expressed as “ ladder diagrams” and as such had a programmable read-only program (PROM) memory. Programs were ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
CMOS
Complementary metal–oxide–semiconductor (CMOS, pronounced "sea-moss", ) is a type of metal–oxide–semiconductor field-effect transistor (MOSFET) fabrication process that uses complementary and symmetrical pairs of p-type and n-type MOSFETs for logic functions. CMOS technology is used for constructing integrated circuit (IC) chips, including microprocessors, microcontrollers, memory chips (including CMOS BIOS), and other digital logic circuits. CMOS technology is also used for analog circuits such as image sensors (CMOS sensors), data converters, RF circuits (RF CMOS), and highly integrated transceivers for many types of communication. The CMOS process was originally conceived by Frank Wanlass at Fairchild Semiconductor and presented by Wanlass and Chih-Tang Sah at the International Solid-State Circuits Conference in 1963. Wanlass later filed US patent 3,356,858 for CMOS circuitry and it was granted in 1967. commercialized the technology with the trademark "COS-MO ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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. The company was co-founded by Ken Olsen and Harlan Anderson in 1957. Olsen was president until forced to resign in 1992, after the company had gone into precipitous decline. The company produced many different product lines over its history. It is best known for the work in the minicomputer market starting in the mid-1960s. The company produced a series of machines known as the PDP line, with the PDP-8 and PDP-11 being among the most successful minis in history. Their success was only surpassed by another DEC product, the late-1970s VAX "supermini" systems that were designed to replace the PDP-11. Although a number of competitors had successfully competed with Digital through the 1970s, the VAX cemented the company's place as a leading vendor in the computer space. As microcomputers improved in the late 1980s, especially wit ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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