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Joseph jacquard contributions to the history of computer
Weegy: Joseph-Marie Jacquard was not the inventor of the programmable loom, as many people imagine, actually he created an attachment to the loom, which played a very important role not only in the textile industry, [ but also in development of other programmable machines, such as computers, for example the Analytical Engine of Charles Babbage. ] (More)
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Asked 1/12/2013 3:45:44 AM
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Joseph Jacquard contributions to the history of computer
Weegy: Joseph Marie Charles dit (called or nicknamed) Jacquard (7 July 1752 – 7 August 1834) was a French weaver and merchant. [ He played an important role in the development of the earliest programmable loom (the "Jacquard loom"), which in turn played an important role in the development of other programmable machines, such as computers. The Jacquard Loom is a mechanical loom that has holes punched in pasteboard, each row of which corresponds to one row of the design. Multiple rows of holes are punched on each card and the many cards that compose the design of the textile are strung together in order. It is based on earlier inventions by the Frenchmen Basile Bouchon (1725), Jean-Baptiste Falcon (1728) and Jacques Vaucanson (1740).[14] In order to discuss the Jacquard loom, some basic knowledge of weaving is necessary. In order to make a strip of cloth, parallel threads (the “warp”) are stretched across a rectangular frame. To make a plain piece of cloth, every other warp thread is raised slightly. A thread (the “weft thread”) is then passed (at a right angle to the warp) through the space (the “shed”) between the lower and the upper warp threads. The raised warp threads are then lowered and the previously lower warp threads are raised, and the weft thread is then passed through the shed in the opposite direction. The process can then be repeated indefinitely. ] (More)
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Asked 1/12/2013 3:50:53 AM
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John van newsman contributions to the history of computer
Weegy: Von Neumann was an important figure in computer science. The use of memory in digital computers to store both sequences of instructions and data was a breakthrough to which von Neumann made major contributions. In 1945, [ while consulting for the Moore School of Electrical Engineering on the EDVAC project, von Neumann wrote an incomplete set of notes, titled the First Draft of a Report on the EDVAC. This widely distributed paper laied foundations of a computer architecture in which the data and the program are both stored in the computer's memory in the same address space, which will be described later as von Neumann Architecture (see the lower drawing). This architecture became the de facto standard for a long time and is still used today (until technology enabled more advanced architectures). Von Neumann also created the field of cellular automata without the aid of computers, constructing the first self-replicating automata with pencil and graph paper. The concept of a universal constructor was fleshed out in his posthumous work Theory of Self Reproducing Automata. Von Neumann proved that the most effective way of performing large-scale mining operations such as mining an entire planet or asteroid belt would be by using self-replicating machines, taking advantage of their exponential growth. Von Neumann is credited with at least one contribution to the study of algorithms. The renowned computer scientist Donald Knuth cites von Neumann as the inventor (in 1945), of the merge sort algorithm, in which the first and second halves of an array are each sorted recursively and then merged together. His algorithm for simulating a fair coin with a biased coin is used in the software whitening stage of some hardware random number generators. ] (More)
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