Híradástechnika K-86
Brief History
Mass production of the hungarian-canadian pocket calculators which were introduced at the Budapest International Fair 1973, was started in the second half of the year. The simplest model (K-831) was produced in high quantities, the 10-digit version was the second, but only 100 pieces of K-86 were made. These were almost identical to Bowmar’s and United States’ first pocket calculator, the Bowmar 901B, the only difference is the display and design of the housing.
| Manufacturer: | Híradástechnika Szövetkezet (Hungary) |
| OEM: | Bowmar-Ali Inc. (USA) |
| OEM model: | 901B |
| Mfg. date: | 1973 |
| Size: | 7,8×13,2×3,7 cm |
| Weight (ready for operate): | n.a. |
| Type: | four-function |
| Capacity: | 8 digits (input/display) 8 digits (internal precision) |
| Operating logic: | arithmetic |
| CPU: | Texas Instruments TMS0103NC |
| Registers: | 2 standard (with saving the pending operation) 1 constant (with saving the pending operation) |
| Features: | Ffloating-point notation |
| Display: | 8+1 digit LED (Bowmar Optostic) |
| Power: | 6×AA NiCd rechargeable battery (built-in) chargeable with E-69 adaptor |
K-86
Inside of the K-86
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