00641nam a22001817a 450000500170000000800410001702000180005808200180007610000360009424500940013026000490022430000380027350400210031152600120033260000460034470000340039070000350042420260304131716.0260304b           ||||| |||| 00| 0 eng d  a9781260098563  a004 O45 2019 1 aO'Leary, Timothy J., eauthor.   aComputing essentials 2019 /cTimothy J. O'Leary, Lindal I. O'Leary and Daniel A. O'Leary.  aNew York : bMcGraw-Hill Education, cc2019.  axix, 392p. bcolor illustrations.  aIncludes index.   a400-499  a Computers -- Electronic data processing.1 aO'Leary, Linda I., eauthor. 1 aO'Leary, Daniel A., eauthor.