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Systems consisting of vacuum tubes, they gave off a lot of heat and had a relatively short life. Large and heavy machines. The large ENIAC computer (30 tons) is built.
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IBM had a monopoly on data processing equipment based on punch cards and was having a big boom in products
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He then began to build electronic computers and his first entry was with the IBM 701
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The IBM 701 became a commercially viable product. However in 1954 the IMB 650 model was introduced