Book Card Care
• Do not touch the metal con-
tacts on the book cards.
Caution: Touching these electrical
contacts with statically charged objects,
including your fingers, could erase
information entered in a book card or
built-in book.
• Do not put excessive pressure
on the book cards.
• Do not expose the book cards to
heat, cold, or liquids.
Copyrights and Patents
Model: DBE-2020
• size: 5.9 x 4.2 x 0.6 cm
• weight: 0.4 oz. (without batteries)
© 1987-1997 Franklin Electronic
Publisher, Inc., Burlington, NJ 08016
USA. All rights reserved.
© 1989 William Collins Sons & Co., Ltd. All
Rights Reserved
FCC Notice: Complies with the limits
for a Class B computing device pursuant
to Subpart B of part 15 of FCC Rules.
Operation is subject to the following two
conditions: (1) This device may not
cause harmful interference; and (2) This
device must accept any interference
received, including interference that may
cause undesired operation.
U.S. Patents 4,490,811; 4,830,618;
4,891,775; 4,982,181; 5,007,019; 5,113,340;
5,153,831; 5,203,705; 5,218,536; 5,229,936;
5,249,965; 5,295,070; 5,321,609; 5,333,313;
European Patent 0 136 379. Pat. Pend.
18
ISBN 1-56712-173-X