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APEXC
The APE(X)C, or All Purpose Electronic (X) Computer series was designed by Andrew Donald Booth at Birkbeck College, London in the early 1950s. His work on the APE(X)C series was sponsored by the British Rayon Research Association.Early British computers, Simon Hugh Lavington 1980 Although the naming conventions are slightly unclear, it seems the first model belonged to the BRRA.History of Computing:Learning from the Past, Arthur Tatnall Springer, 2010 According to Booth, the X stood for X-company. One of the series was also known as the APE(X)C or All Purpose Electronic X-Ray Computer and was sited at Birkbeck. Background From 1943 on, Booth started working on the determination of crystal structures using X-ray diffraction data. The computations involved were extremely tedious and there was ample incentive for automating the process and he developed an analogue computer to compute the reciprocal spacings of the diffraction pattern. In 1947, along with his collaborator and fut ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Kathleen Booth
Kathleen Hylda Valerie Booth ( Britten, 9 July 1922 – 29 September 2022) was a British computer scientist and mathematician who wrote the first assembly language and designed the assembler and autocode for the first computer systems at Birkbeck, University of London, Birkbeck College, University of London. She helped design three different machines including the ARC (Automatic Relay Calculator), SEC (Simple Electronic Computer), and APEXC, APE(X)C. Early life and education Kathleen Britten was born in Stourbridge, Worcestershire, England, on 9 July 1922. She obtained a Bachelor of Science, BSc in mathematics from the University of London in 1944 and went on to get a PhD in Applied mathematics, Applied Mathematics in 1950. She married her colleague Andrew Donald Booth in 1950 and had two children. Career Kathleen Booth worked at Birkbeck College, 1946–62.. She travelled to the United States as Andrew Donald Booth, Andrew Booth's research assistant in 1947, visiting with John ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Andrew Donald Booth
Andrew Donald Booth (11 February 1918 – 29 November 2009)Andrew Booth: scientist who invented the magnetic storage device '''', 12 January 2010. was a British electrical engineer, physicist and computer scientist, who was an early developer of the magnetic drum memory for s. He is known for |
Hollerith Electronic Computer
The Hollerith Electronic Computer (HEC) was produced by the British Tabulating Machine Company (BTM) and was based on a design by Professor Andrew Booth of Birkbeck College, London. It was Britain's first mass-produced business computer. The prototype first worked at the end of 1951. Origins In 1950 John Womersley, who had previously led the team developing the Automatic Computing Engine (ACE) at the National Physical Laboratory (NPL), joined the Unit record equipment company, BTM. He recognised that there was a need for smaller inexpensive computers and recruited Andrew Booth as a consultant to develop such a machine. Booth had previously worked for the British Rayon Research Association (BRRA) before moving to Birkbeck College in 1945. The BRRA had sponsored him to develop what became the All Purpose Electronic Computer (APEXC). He needed punched card input and output technologies and struck a deal with BTM, whereby they supplied him with these in return for their copying ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
British Rayon Research Association
The British Rayon Research Association was a research institute formed in 1946 by the British Rayon Federation and others.The Times, November 29, 1946 page 10 It was funded by the Department of Scientific and Industrial Research and by voluntary funds from industry to investigate the chemical and physical properties of rayon and rayon fabrics, using a wide range of laboratory and theoretical methods. John Wilson, who was its Director from 1948 to 1958 was appointed a CBE for his work at the BRRA.The Times, John Wilson obituary, 15 September 1976 It was located near Ringway Airport in Manchester, initially, and then at Heald Green near Manchester after 1955. Work from the Association included academic publication, that included papers by Leslie Treloar in the journal ''Polymer''. The BRRA sponsored Andrew Donald Booth's early research into computing at Birkbeck and was home to the first of his All Purpose Electronic Computers built in 1952 Under Wilson's leadership, the staff o ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Wharf Engineering Laboratories
A wharf, quay (, also ), staith, or staithe is a structure on the shore of a harbour or on the bank of a river or canal where ships may dock to load and unload cargo or passengers. Such a structure includes one or more berths (mooring locations), and may also include piers, warehouses, or other facilities necessary for handling the ships. Wharves are often considered to be a series of docks at which boats are stationed. Overview A wharf commonly comprises a fixed platform, often on deep foundation, pilings. Commercial ports may have warehouses that serve as interim storage: where it is sufficient a single wharf with a single berth constructed along the land adjacent to the water is normally used; where there is a need for more capacity multiple wharves, or perhaps a single large wharf with multiple berths, will instead be constructed, sometimes projecting over the water. A pier, raised over the water rather than within it, is commonly used for cases where the weight or volume ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Division (mathematics)
Division is one of the four basic operations of arithmetic, the ways that numbers are combined to make new numbers. The other operations are addition, subtraction, and multiplication. At an elementary level the division of two natural numbers is, among other possible interpretations, the process of calculating the number of times one number is contained within another. This number of times need not be an integer. For example, if 20 apples are divided evenly between 4 people, everyone receives 5 apples (see picture). The division with remainder or Euclidean division of two natural numbers provides an integer ''quotient'', which is the number of times the second number is completely contained in the first number, and a ''remainder'', which is the part of the first number that remains, when in the course of computing the quotient, no further full chunk of the size of the second number can be allocated. For example, if 21 apples are divided between 4 people, everyone receives ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Punched Cards
A punched card (also punch card or punched-card) is a piece of stiff paper that holds digital data represented by the presence or absence of holes in predefined positions. Punched cards were once common in data processing applications or to directly control automated machinery. Punched cards were widely used through much of the 20th century in the data processing industry, where specialized and increasingly complex unit record machines, organized into semiautomatic data processing systems, used punched cards for data input, output, and storage. The IBM 12-row/80-column punched card format came to dominate the industry. Many early digital computers used punched cards as the primary medium for input of both computer programs and data. While punched cards are now obsolete as a storage medium, as of 2012, some voting machines still used punched cards to record votes. They also had a significant cultural impact. History The idea of control and data storage via punched holes ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Business Efficiency Exhibition
Business is the practice of making one's living or making money by producing or buying and selling products (such as goods and services). It is also "any activity or enterprise entered into for profit." Having a business name does not separate the business entity from the owner, which means that the owner of the business is responsible and liable for debts incurred by the business. If the business acquires debts, the creditors can go after the owner's personal possessions. A business structure does not allow for corporate tax rates. The proprietor is personally taxed on all income from the business. The term is also often used colloquially (but not by lawyers or by public officials) to refer to a company, such as a corporation or cooperative. Corporations, in contrast with sole proprietors and partnerships, are a separate legal entity and provide limited liability for their owners/members, as well as being subject to corporate tax rates. A corporation is more complicated and e ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hollerith Electronic Computer1 Prototype
Herman Hollerith (February 29, 1860 – November 17, 1929) was a German-American statistician, inventor, and businessman who developed an electromechanical tabulating machine for punched cards to assist in summarizing information and, later, in accounting. His invention of the punched card tabulating machine, patented in 1884, marks the beginning of the era of mechanized binary code and semiautomatic data processing systems, and his concept dominated that landscape for nearly a century. Hollerith founded a company that was amalgamated in 1911 with several other companies to form the Computing-Tabulating-Recording Company. In 1924, the company was renamed "International Business Machines" ( IBM) and became one of the largest and most successful companies of the 20th century. Hollerith is regarded as one of the seminal figures in the development of data processing. Personal life Herman Hollerith was the son of German immigrant Georg Hollerith, a school teacher from Großfischling ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Paper Tape
Five- and eight-hole punched paper tape Paper tape reader on the Harwell computer with a small piece of five-hole tape connected in a circle – creating a physical program loop Punched tape or perforated paper tape is a form of data storage that consists of a long strip of paper in which holes are punched. It developed from and was subsequently used alongside punched cards, differing in that the tape is continuous. Punched cards, and chains of punched cards, were used for control of looms in the 18th century. Use for telegraphy systems started in 1842. Punched tape was used throughout the 19th and for much of the 20th centuries for programmable looms, teleprinter communication, for input to computers of the 1950s and 1960s, and later as a storage medium for minicomputers and CNC machine tools. During the Second World War, high-speed punched tape systems using optical readout methods were used in code breaking systems. Punched tape was used to transmit data for manufacture o ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Computer Printer
In computing, a printer is a peripheral machine which makes a persistent representation of graphics or text, usually on paper. While most output is human-readable, bar code printers are an example of an expanded use for printers. Different types of printers include 3D printers, inkjet printers, laser printers, and thermal printers. History The first computer printer designed was a mechanically driven apparatus by Charles Babbage for his difference engine in the 19th century; however, his mechanical printer design was not built until 2000. The first patented printing mechanism for applying a marking medium to a recording medium or more particularly an electrostatic inking apparatus and a method for electrostatically depositing ink on controlled areas of a receiving medium, was in 1962 by C. R. Winston, Teletype Corporation, using continuous inkjet printing. The ink was a red stamp-pad ink manufactured by Phillips Process Company of Rochester, NY under the name Clear Prin ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Alphanumeric Keyboard
The technology of computer keyboards includes many elements. Among the more important of these is the switch technology that they use. Computer alphanumeric keyboards typically have 80 to 110 durable switches, generally one for each key. The choice of switch technology affects key response (the positive feedback that a key has been pressed) and pre-travel (the distance needed to push the key to enter a character reliably). Virtual keyboards on touch screens have no physical switches and provide audio and haptic feedback instead. Some newer keyboard models use hybrids of various technologies to achieve greater cost savings or better ergonomics. The modern keyboard also includes a control processor and indicator lights to provide feedback to the user (and to the central processor) about what state the keyboard is in. Plug and play technology means that its 'out of the box' layout can be notified to the system, making the keyboard immediately ready to use without need for further ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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