Cassel, Don <br/><br/>
Understanding computers / 
Don Cassel. 
 - Englewood Cliffs, NJ :  Prentice Hall,  c1990. 
 - xvii, 435 p. :  chiefly col. ill. 
<br/><br/> Includes appendices, glossary and index. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Computers<br/>Computer software