Ricoh Ricomac RC-8
Brief History
The Japanese Ricoh office machine company has produced desktop calculators almost from the beginning, since 1967, and they tried to cover all parts from domestic production. Seeing the competitive pocket calculators that appeared as a result of technological developments in 1971-72, Ricoh also wanted to compete with similar types, but it could not yet provide this from its own production. Based on similar principles, Omron built its first battery-powered pocket calculator, the Omron 81, in 1973 from domestic components. Ricoh also noticed this, so it brought a modified OEM version of that with a very distinctive design to the market. This was the Ricomac RC-8 model. The best of the later models were already manufactured by Ricoh itself — with the same SMK keyboard as the RC-8 — but some models were made by Omron and Systek's predecessor, the Ise company — which is not the same as the Iseden at the time, the later Ise (Itron).
It is worth comparing it with the German Triumph-Adler’s landscape format model (80D), which is completely identical to the Omron 81 and the Ricoh RC-8.
| Manufacturer: | Ricoh Company, Ltd. (Japan) |
| OEM: | Omron Tateisi Electronics Co. (Japan) |
| OEM model: | 81 |
| Mfg. date: | 1973 |
| Size: | 9,4×15,9×2,2 cm |
| Weight (ready for operate): | n.a. |
| Type: | four-function |
| Capacity: | 8 digits (input/display) 8 digits (internal precision) |
| Operating logic: | algebraic |
| CPU: | Omron HD32153P |
| Registers: | 2 standard (with saving the pending operation) 1 constant (with saving the pending operation) |
| Features: | Ffloating-point notation |
| Display: | 8 digit VFD (Futaba 8-CT-01A) |
| Power: | 4×AA battery or adaptor |
Ricomac RC-8
Inside of the RC-8
Keyboard of the RC-8
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