Shelly, Gary B. <br/><br/>
Essential computer concepts 

 - Danvers, Massachusetts  Boyd and fraser publishing company  1993 
 - various pagings  28cm. 
<br/><br/><label>ISBN: </label>0877090971 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Electronic digital computers
<br/><br/><label>LC Class. No.: </label>QA76.5.E87 1993