Koh-I-Noor
Model: Studio 29 Koh-I-Noor
Battery: 9 vot
Adapter:
Year: 1979
Chip: TMS0981
Info: Made in Italy (RIETI) RCI
Model: TI Professional Koh-I-Noor
Battery: 9 volt or RK2
Adapter: AC9900/r
Year: 1978
Chip: TMS0981
Info: Made in Italy (RIETI) RCI
It is obvious that the model professional - manufactured for Koh-I-Noor Hardtmuth - is a hybrid of three different products:
| • The basic functionality is borrowed without any doubts from the TI-30 introduced in 1976 • The double-shot injection molded keys are known from the Business Analyst-I • The yellow-brown keyboard plate is... unique |
Dismantling this model professional manufactured in 1978 reveals a standard TI-30 printed circuit board (PCB) with the well-known TMS0981 single-chip calculator circuit.
Model: TI-30 Koh-i-Noor
Battery: 9 volt
Adapter: BP7
Year: 1980
Chip: TMC0981
Info: One of the best-selling calculators in the world, Koh-I-Noor sold it here under its own brand. Produced in the 27th week of 1980 (2780RCI) by Texas Instruments in the plant of Rieti, in Italy!
Model: TI-30 super Koh-I-Noor
Battery: 9 vot
Adapter:
Year: 1979
Chip: TMC0981
Info: Made in Italy (RIETI) RCI
It is obvious that the model 30/super - manufactured for Koh-I-Noor Hardtmuth - is a hybrid of three different products:
| • The basic functionality is borrowed without any doubts from the TI-30 introduced in 1976 • The double-shot injection molded keys are known from the Business Analyst-I • The printed Texas Instruments logo between the display and keyboard are carried over from the European TI-45 |
Model: TI-45 Koh-I-Noor
Battery: 9 vot
Adapter: BP7
Year: 1978
Chip: TMC1983
Info: TI-45 (Koh-I-Noor Hardtmuth) features a green vacuum fluorescent display (VFD). Produced in the 9th week of 1978 (0978RCI) by Texas Instruments in the plant of Rieti, in Italy!
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