00730nam a2200193 a 450000500170000000800410001702000150005805000230007324500180009626000410011430000440015544000350019950000200023452001700025465000360042465000280046065000270048871000210051520230110140528.0040501s1994    vaua   j bi   000 0 eng d  a9772386682 4aQA76.23b.C66 19941 aComputer age.  aAlexandria, Va. :bTime-Life,c1994.  a151 p. :bcol. ill., col. map ;c31 cm.0 aUnderstanding science & nature  aIncludes index.  aDescribes, in a question and answer format, the workings of computers, from early calculating machines to supercomputers, from personal computers to neural networks. 0aComputersxJuvenile literature. 1aComputersxMiscellanea. 1aQuestions and answers. 2aTime-Life Books.