Tokheim, Roger L. Schaum's outline of theory and problems of digital principles / Roger L. Tokheim. - 3rd. - New York : McGraw-Hill, 1994. - vii, 352 p. : ill. ; 28 cm. - Schaum's outline series . Includes index. Open. ISBN: 0070650500 LCCN: 9364 Subjects--Topical Terms: Digital electronics.