Digital techniques :  a step-by-step introduction / 
Heathkit/Zenith Educational Systems 
 - Rev. ed 
 - Englewood Cliffs, N.J. :  Prentice-Hall,  1983 
 - 471p. :  ill. ;  24 cm. 
 - Training in computers & electronics series .
<br/><br/> 'A Spectrum book.'  Includes index 
<br/><br/><label>LCCN: </label>83-3038 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Digital electronics