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Uncommitted Logic Array
A GATE ARRAY or UNCOMMITTED LOGIC ARRAY (ULA) is an approach to the design and manufacture of application-specific integrated circuits (ASICs), using a prefabricated chip with active devices like NAND-gates, that are later interconnected according to a custom order by adding metal layers in the factory. CONTENTS * 1 Design * 2 History * 3 Field programmable gate array * 4 References DESIGNA gate array circuit is a prefabricated silicon chip circuit with no particular function, in which transistors , standard NAND or NOR logic gates , and other active devices are placed at regular predefined positions and manufactured on a wafer , usually called a master slice. Creation of a circuit with a specified function is accomplished by adding a final surface layer or layers of metal interconnects to the chips on the master slice late in the manufacturing process, joining these elements to allow the function of the chip to be customized as desired
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Main Page
The 1983 ATLANTIC HURRICANE SEASON was the least active Atlantic hurricane season in 53 years. Although the season begins by convention on June 1, there were no tropical depressions until July 23, and only four of the season's seven depressions became tropical storms . Tropical Depression Three became Hurricane Alicia_(satellite image pictured)_ on August 17 and made landfall in Texas the next day, breaking thousands of glass windows in Houston's skyscrapers, killing 22 people and causing $1.7 billion in damage. The storm that became Hurricane Barry formed on August 25, crossed Florida, and made landfall near Brownsville, Texas
Brownsville, Texas
, dissipating five days later. Hurricane Chantal stayed out at sea, and was absorbed by a front on September 15. Tropical Depression Six formed on September 19 and caused heavy rains in the Caribbean
Caribbean

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Home Computer
HOME COMPUTERS were a class of microcomputers entering the market in 1977, and becoming common during the 1980s. They were marketed to consumers as affordable and accessible computers that, for the first time, were intended for the use of a single nontechnical user. These computers were a distinct market segment that typically cost much less than business, scientific or engineering-oriented computers of the time such as the IBM PC , and were generally less powerful in terms of memory and expandability. However, a home computer often had better graphics and sound than contemporary business computers. Their most common uses were playing video games , but they were also regularly used for word processing , doing homework, and programming
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Ferranti
FERRANTI or FERRANTI INTERNATIONAL PLC was a UK electrical engineering and equipment firm that operated for over a century from 1885 until it went bankrupt in 1993 (the Belgian subsidiary lives on as Ferranti
Ferranti
Computer
Computer
Systems and is now part of the Nijkerk Holding). Known primarily for defence electronics , the company was once a constituent of the FTSE 100 Index
FTSE 100 Index
. The firm was known for work in the area of power grid systems and defence electronics . In addition, in 1951 Ferranti
Ferranti
began selling the first commercially available computer, the Ferranti Mark 1 . CONTENTS* 1 History * 1.1 Beginnings * 1.2 Expansion * 1.3 Defence electronics * 1.4 Industrial electronics * 1.5 Computers * 1.6 Semiconductors * 1.7 Acquisition of International Signal "> Ferranti
Ferranti
steam generating set, c
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BBC Micro
16–32 KiB (Model A/B) 64–128 KiB (Model B+) 128 KiB (Master) Plus 32–128 KB ROM, expandable to 272 KiB STORAGE100–800 KB (DFS) 160–1280 KB (ADFS floppy disks) 20 MB (ADFS hard disk) DISPLAY PAL
PAL
/ NTSC , UHF
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Acorn Computers
ACORN COMPUTERS LTD. was a British computer company established in Cambridge
Cambridge
, England, in 1978. The company produced a number of computers which were especially popular in the UK , including the Acorn Electron
Acorn Electron
and the Acorn Archimedes . Acorn's BBC Micro computer dominated the UK educational computer market during the 1980s. It is more known for its BBC Micro model B computer than for its other products. Though the company was broken up into several independent operations in 1998, its legacy includes the development of reduced instruction set computing (RISC) personal computers. One of its operating systems , RISC OS
RISC OS
, continues to be developed by RISC OS
RISC OS
Open
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Sinclair ZX81
The ZX81 is a home computer produced by Sinclair Research and manufactured in Scotland by Timex Corporation . It was launched in the United Kingdom in March 1981 as the successor to Sinclair's ZX80 and was designed to be a low-cost introduction to home computing for the general public. It was hugely successful, and more than 1.5 million units were sold before it was discontinued. The ZX81 found commercial success in many other countries, notably the United States, where it was initially sold as the ZX-81. Timex manufactured and distributed it under licence and enjoyed a substantial but brief boom in sales. Timex later produced its own versions of the ZX81 for the US market – the Timex Sinclair 1000 and Timex Sinclair 1500 . Unauthorised clones of the ZX81 were produced in several countries
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Portal
PORTAL may refer to: * Portal (architecture) , a monumental gate or door, or the extremities (ends) of a tunnel * Portals in fiction , magical or technological doorways that connect two locations, dimensions, or points in time * _ Portal _, a video game series developed by Valve Corporation CONTENTS* 1 Computing * 1.1 Gateways to information * 1.2 Other computing * 2 Art, entertainment, and media


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IBM PC
The IBM
IBM
PERSONAL COMPUTER, commonly known as the IBM
IBM
PC, is the original version and progenitor of the IBM PC compatible hardware platform . It is IBM
IBM
model number 5150, and was introduced on August 12, 1981. It was created by a team of engineers and designers under the direction of Don Estridge of the IBM
IBM
Entry Systems Division in Boca Raton, Florida . The generic term _personal computer _ was in use before 1981, applied as early as 1972 to the Xerox PARC 's Alto , but because of the success of the IBM
IBM
Personal Computer, the term "PC" came to mean more specifically a desktop microcomputer compatible with IBM's _Personal Computer_ branded products
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Field-programmable Gate Array
A FIELD-PROGRAMMABLE GATE ARRAY (FPGA) is an integrated circuit designed to be configured by a customer or a designer after manufacturing – hence "field-programmable ". The FPGA configuration is generally specified using a hardware description language (HDL), similar to that used for an application-specific integrated circuit (ASIC). (Circuit diagrams were previously used to specify the configuration, as they were for ASICs, but this is increasingly rare.) A Spartan FPGA from Xilinx FPGAs contain an array of programmable logic blocks , and a hierarchy of reconfigurable interconnects that allow the blocks to be "wired together", like many logic gates that can be inter-wired in different configurations. Logic blocks can be configured to perform complex combinational functions , or merely simple logic gates like AND and XOR . In most FPGAs, logic blocks also include memory elements, which may be simple flip-flops or more complete blocks of memory
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Autonomous Things
AUTONOMOUS THINGS, abbreviated AUT, or the INTERNET OF AUTONOMOUS THINGS, abbreviated as IOAT, is an emerging term for the technological developments that are expected to bring computers into the physical environment as autonomous entities without human direction, freely moving and interacting with humans and other objects. Self-navigating drones are the first AuT technology in (limited) deployment. It is expected that the first mass-deployment of AuT technologies will be the autonomous car , generally expected to be available around 2020. Other currently expected AuT technologies include home robotics (e.g., machines that provide care for the elderly, infirm or young), and military robots (air , land or sea autonomous machines with information-collection or target-attack capabilities). AuT technologies share many common traits, which justify the common notation
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Special
SPECIAL or SPECIALS may refer to: CONTENTS * 1 Music * 2 Film and television * 3 Other uses * 4 See also MUSIC * _Special_ (album) , a 1992 album by Vesta Williams * "Special" (Garbage song) , 1998 * "Special" (Mew song) , 2005 * "Special" (Stephen Lynch song) , 2000 * The Specials , a British band * "Special", a song by Violent Femmes on _The Blind Leading the Naked _ * "Special", a song on _ The Documentary _ album by GameFILM AND TELEVISION * Special (lighting) , a stage light that is used for a single, s
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Robotics
ROBOTICS is the interdisciplinary branch of engineering and science that includes mechanical engineering , electrical engineering , computer science , and others. Robotics deals with the design, construction, operation, and use of robots , as well as computer systems for their control, sensory feedback , and information processing . These technologies are used to develop machines that can substitute for humans. Robots can be used in any situation and for any purpose, but today many are used in dangerous environments (including bomb detection and de-activation ), manufacturing processes, or where humans cannot survive. Robots can take on any form but some are made to resemble humans in appearance. This is said to help in the acceptance of a robot in certain replicative behaviors usually performed by people
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Prototype
A PROTOTYPE is an early sample, model, or release of a product built to test a concept or process or to act as a thing to be replicated or learned from. It is a term used in a variety of contexts, including semantics , design , electronics , and software programming . A prototype is generally used to evaluate a new design to enhance precision by system analysts and users. Prototyping serves to provide specifications for a real, working system rather than a theoretical one. In some design workflow models, creating a prototype (a process sometimes called MATERIALIZATION) is the step between the formalization and the evaluation of an idea. The word _prototype_ derives from the Greek πρωτότυπον _prototypon_, "primitive form", neutral of πρωτότυπος _prototypos_, "original, primitive", from πρῶτος _protos_, "first" and τύπος _typos_, "impression". CONTENTS * 1 Basic prototype categories * 2 Differences in creating a prototype vs
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Complex Programmable Logic Device
A COMPLEX PROGRAMMABLE LOGIC DEVICE (CPLD) is a programmable logic device with complexity between that of PALs and FPGAs , and architectural features of both. The main building block of the CPLD is a macrocell , which contains logic implementing disjunctive normal form expressions and more specialized logic operations. CONTENTS * 1 Features * 2 Distinctions * 3 See also * 4 External links * 5 References FEATURESSome of the CPLD features are in common with PALs : * Non-volatile configuration memory
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Xilinx
XILINX, Inc. (/ˈzaɪlɪŋks/ ZY-lingks ) is an American technology company , primarily a supplier of programmable logic devices . It is known for inventing the field-programmable gate array (FPGA) and as the first semiconductor company with a fabless manufacturing model. Founded in Silicon Valley in 1984, the company is headquartered in San Jose , USA, with additional offices in Longmont , USA; Dublin
Dublin
, Ireland; Singapore
Singapore
; Hyderabad
Hyderabad
, India; Beijing
Beijing
, China; Shanghai
Shanghai
, China; Brisbane
Brisbane
, Australia and Tokyo
Tokyo
, Japan. Major FPGA product families include Virtex (high-performance), Kintex (mid-range) and Artix (low-cost), and Spartan (low-cost) series. Major computer software includes Xilinx IS