00356nam a22001337a 450000500170000002000240001703500120004103700130005310000170006624500650008326000280014830000270017670000190020320120419122628.0  a08125907904c250.00  aB-86635  aDPLbENG  aLeon, Alexis  aIntroduction to computers /cby Alexis Leon and Mathews Leon  aChennaibLeon Techworld  avarious pagesc26 cms.  aLeon, Mathews