Time Life books <br/><br/>
Understanding computers  Input/output 

 - Virginia  Time Life books 
 - 128 p.  ill. 
<br/><br/><label>ISBN: </label>0809475626 (10) 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Computer science
<br/><br/><label>Dewey Class. No.: </label>001.6  / U52