Clifford, Sarah Hutchinson. <br/><br/>
Computers, communications, and information :  a user's introduction ; comprehensive version / 
Sarah E. Hutchinson and Stacey C. Sawyer. 
 - 7th ed. 
 - Boston :  McGraw-Hill,  c2000. 
 - 1 v. (various pagings) :  ill. ;  28 cm. 
<br/><br/> Includes index. 
<br/><br/><label>ISBN: </label>0072297441 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Computers.<br/>Telecommunication systems.<br/>Information technology.
<br/><br/><label>Dewey Class. No.: </label>004.0285  / CLC 2000