Toshiba BC-0804B

Date of introduction:  1973 Display technology:  Fluorescent
New price:  DM 595.00 Display size:  8
Size:  6.9" x 4.1" x 1.8"
 175 x 104 x 46 mm3
Weight:  14.5 ounces, 440 grams Serial No:  M82806
Batteries:  5*AA or NiCd-pack Date of manufacture:  mth 02 year 1973
AC-Adapter:  BH-101 (115V) or
 BH-103 (220V)
Origin of manufacture:  Japan 
Precision:  8 Integrated circuits:  Toshiba T3125, T3127
Program steps:   Courtesy of:  Joerg Woerner

This Toshiba BC-0804B looks familiar to us, it is very similar to the BC-1205B but uses a green Vacuum Fluorescent Display instead the red Light-Emitting Diodes. Other differences are the narrow display with 8 digits instead 12 digits and a combined [+=]-key.

Dismantling the featured Toshiba BC-0804B manufactured in February 1973 reveals a very robust keyboard construction with small magnets and Reed-contacts known from early desktop calculators.

The printed circuit board (PCB) of the BC-0804B is centered around a Toshiba T3125 / T3127 calculator chip-set.

The later BC-0811B changed the keyboard technology and added a memory to the basic calculator functions.


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If you have additions to the above article please email:

Joerg Woerner, February 21, 2004. No reprints without written permission.