O'Leary, Timothy J. <br/><br/>
Computing essentials 2021 / 
Timothy J. O'Leary ; Linda I. O'Leary and Daniel A. O'Leary.. 
 - New York :  McGraw-Hill,  c2021. 
 - xxv, 390 p. :  ill. ;  28 cm. 
<br/><br/>Includes glossary and index. 
<br/><br/><label>ISBN: </label>9781260570755 (pbk.) 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Computers.<br/>Electronic data processing.
<br/><br/><label>Dewey Class. No.: </label>004  / OLE