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10.01.2021 05:11

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найти глаголы вообще History of Computers Let take a look at the history of the computers that we know today. The very first calculating device used was the ten fingers of a man's hands. This, in fact, is why today we count in tens and multiply of tens. Then the abacus was invented, a bead frame in which the beads are moved from left to right. People went on using some form of abacus well into the 16" century, it is being used in some parts of the world because it be understood without knowing how to read. During the 17th and 18th centuries many people tried to find easy ways of calculating . J. Napier, a Scotsman, devised a mechanical way of multiplying and dividing, which is how the modern slide rule works. Henry Briggs used Napier's ideas to produce logarithm which all mathematicians used today. Calculus, another branch of mathematics, was independently invented by both Sir Isaac Newton, an Englishman, and Leibnitz, a German mathematician. The first real caleulating machine appeared in 1820 as the result of several people's experiments. This type of machine, which saves great deal of time and reduces the possibility of making mistakes , depends on a ten-toothed gear wheels. In 1830 Charles Babbage, an Englishman, designed a machine that was called The Analytical Engine'. This machine, which Babbage showed at the Paris Exhib ition in 1855, was an attempt to cut out the human being altogether, expert for providing the machine with the necessary facts the problem to be sowed. He never finished this work, but many of his ideas were the basis for building today's computers. In 1930, the first analog computer was built by American named Vannevar Bush. The device was used in World War II to help aim guns. Mark I, the name given to the first digital computer, was completed in 1944. The men responsible for this invention were Professor Howard Aiken and some people from IBM. This was the first machine that could figure out long of mathematical problems all at a very fast speed. In 1946 two engineers at the University of Pennsylvania, J. Eckert and J. Mayshly, built the first digital computer using parts called vacuum tubes. They named their new invention UNIAC The first generation of computers, which used vacuum tubes, came out in 1950. UNIAC I was example of these computers which could perform thousand of calculations per second. In 1960, the second generation of computers was developed and could perform work times faster than their predecessors. The reason for this extra speed was the use of transis