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In 1930, the first analog computer was built by an American <br>named Vannevar Bush. This device is used during the Second World War, for <br>many of the technical development of electronic digital computability <br>ditch took place in 1940 - and 1950 - ies. Mark I, the name given <br><br>to the first digital computer, was completed in 1944. The man <br><br>responsible for this invention was Professor Howard Aiken. It <br><br>was the first machine that could find a long list of mathe- <br>matic tasks at a very fast pace. <br><br>In 1946, two engineers from the University of Pennsilvania, <br><br>J.Eckert and J.Maushly, built a digital computer with Vacu-mmm <br><br>pipes. They named their new invention ENIAC.<br><br>Another important achievement in developing computers <br><br>came in 1947, when John von Neumann developed the idea of <br><br>a store instruction for a computer within a computer <br><br>memory. John von Neumann's contribution was particu-cially <br><br>significant. In contrast, the analytical engine Babbage, which <br><br>was designed to store only the data ma-chine von Neumann called the EDVAC, was able to store data and instructions. He also promoted the idea of storing data and instructions in a bi-nary code that uses only <br><br>ones and zeros. Thus, computers <br><br>use two condition, high voltage and low voltage, to translate <br><br>the symbols by which we commu-vention in unique combinations<br><br>electrical pulses. We refer to these combinations as codes. <br><br>Neumann computer program is stored, as well as other mA- <br>cheekbones that time were possible, in accordance with the invention, in <br><br>a vacuum tube, which can control and amplify electronic signals.
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