Toshiba BC-814
Brief History
The first Japanese-made pocket calculators, due to the imported technology, were built with LED displays. The larger numbers and lower cost of domestically manufactured vacuum fluorescent display (VFD) tubes have prompted manufacturers to replace their small LED displays built with magnifying lenses as soon as possible. Toshiba did not produce such calculators, but in its BC-814 model we see a display made of large LED elements that is common in the instrument industry. Specific feature of these was the “disordered” display, which results from the “wobble” during soldering. As a result, machines that consume 50% less power than usual have not really been successful.
This calculator was marketed under the name Conti by the West German company MBO, which ordered calculators for its own brand from almost every manufacturer in the world.
| Manufacturer: | Tokyo Shibaura Electric Co., Ltd. (Japan) |
| Mfg. date: | 1975 |
| Size: | 7,8×13,5×2,7 cm |
| Weight (ready for operate): | 172 g |
| Type: | four-function |
| Capacity: | 8 digits (input/display) 8 digits (internal precision) |
| Operating logic: | algebraic |
| CPU: | Toshiba T3314 |
| Registers: | 2 standard (with saving the pending operation) 1 constant (with saving the pending operation) 1 memory (with aritmetic) |
| Features: | %calculation with percent Ffloating-point notation |
| Display: | 9 digit LED (9×Toshiba T01-3H) |
| Power: | 9V battery or adaptor |
BC-814
Inside of the BC-814
Keyboard and display of the BC-814
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