Híradástechnika A-100
Brief History
Híradástechnika Cooperative has started assembling three types of pocket calculators manufactured by Bowmar in 1973. After the success of these small machines,
a desktop calculator has been produces under the name A-100 with ICs familiar from the K-106 (Bowmar 901D), but with decimal setting option. Display is USA-made
Panaplex II gas-discharge tube made by Burroughs, which produces much larger digits than LED-displays. The mechanism of the keyboard is interestingly the same
as seen in pocket calculators: the Klixon system has been expanded with springs to increase keying comfort. Then, Bowmar has produced a full series of desktop calculators.
| Manufacturer: | Híradástechnika Szövetkezet (Hungary) |
| OEM: | Bowmar-Ali Inc. (USA) |
| OEM model: | 904-10 |
| Mfg. date: | 1973 |
| Size: | 17,3×23×6 cm |
| Weight (ready for operate): | 1042 g |
| Type: | four-function desktop |
| Capacity: | 10 digits (input/display) 10 digits (internal precision) |
| Operating logic: | arithmetic |
| CPU: | Texas Instruments TMS0107NC |
| Registers: | 2 standard (with saving the pending operation) 1 constant (with saving the pending operation) |
| Features: | Ffloating-point notation Fixfixed-point notation: the listed decimals can be chosen (2, 3, 4) |
| Display: | 11 digit Panaplex (Burroughs Panaplex II) |
| Power: | 110/220V AC |
A-100
Inside of the A-100
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