1) People invented the first counting machine ... thousand years ago. a) one b) two c) three d) four 2) People invented the first calculator in the ... century. a) 14th b) 15th c) 16h d) 17th 3) Scientists designed the first programmable computer in ... a) 1837 b) 1877 c) 1907 d) 1937 4) Scientists developed the first electronic computers in ... a) 1935 b) 1945 c) 1955 d) 1965 5) The first home computers appeared in ... a) 1966 b) 1971 c) 1976 d) 1981

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