Duffy, Tim <br/><br/>
Computing concepts / 
Tim Duffy. 
 - Belmont, CA :  Wadsworth Pub,  c1992. 
 - xi, 293 p. : ill. 
<br/><br/> Includes glossary and index. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Microcomputers--Programming<br/>Application software