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The first commercial avaiable computer came out in 1950 and was invented in Japan by Hideo Yamachito.
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It was known as the defense calculator and it led up to the fortran language.
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the first computer that did not use vacuum tubes came out in 1954 and it used solid state transistors which consume less power, low cost and portable unlike vacuum tubes.
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it was created by Russel Kirsch and it made photos with a resolution of 176x176. We know can have 4k resolution.
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The computer modem was invented in 1958 and it was a major accomplishment. It allowed computers from all over the United States to share information thru the telephone lines.
