Toshiba BC-8112SL

Date of introduction:  1979 Display technology:  Fluorescent
New price:  DM 29.00 Display size:  8
Size:  5.6" x 2.9" x 0.8"    
Weight:  3.9 ounces Serial No:  15240
Batteries:  2*AA Date of manufacture:  year 1979
AC-Adapter:  BH-115 (110V) or
 BH-116 (220V)
Origin of manufacture:  Taiwan
Precision:  8 Integrated circuits:  TMS1045 
Memories:  1    
Program steps:   Courtesy of:  Joerg Woerner

BC-8112SL_PCB.jpg (80297 Byte)This Toshiba BC-8112SL uses the TMS1045 calculator chip based on the TMS1000 Microcomputer family. In opposite to the very similar TMS1043 found in the Texas Instruments TI-2550-III, the TMS1045 was available to other companies. 

Main advantage of the TMS104x circuits are the integrated drivers for green flourescent displays to minimize manufacturing costs of the calculator. Due to the simple design of the hosting calculators, the TMS1045 found its way into differerent brands. Not all used the whole functions of the circuit:

Calculator M+ +/- 1/x x2 sqr(x) % pi () 2-0-F
Canon F-31 * * * * * * * *  
Canon L813 * *          *      *
Toshiba BC-8111B *        * * *    
Toshiba BC-8112SL *   * * * * * *  

The Toshiba BC-8112SR seems to be identical with the BC-8112SL.

The design of the BC-8111B with its black, blue and red keys traces back to the BC-819 introduced already in 1976.

If you have additions to the above article please email:

Joerg Woerner, October 26, 2002. No reprints without written permission.