DATAMATH CALCULATOR MUSEUM
|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
|Origin of manufacture:||Japan|
|Precision:||8||Integrated circuits:||Toshiba T3125, T3127|
|Program steps:||Courtesy of:||Joerg Woerner|
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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© Joerg Woerner, February 21, 2004. No reprints without written permission.