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zayre concept IIITI 0045 ktsi speechTI Educational

studio 29Model: Studio 29 Koh-I-Noor
Battery: 9 vot
Adapter: 
Year: 1979
Chip:  TMS0981   
Info: Made in Italy (RIETI) RCI

TI professionalModel: 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.

TI 0030 KModel: TI-30 Koh-i-Noor
Battery: 9 volt
Adapter: BP7TI 0030 K 01
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!
      

TI 0030 superModel: TI-30 super Koh-I-Noor
Battery: 9 vot
Adapter: 
Year: 1979
Chip:  TMS0981   
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

TI 0045 kTI 0045 k 01Model: TI-45 Koh-I-Noor
Battery: 9 votTI 0045 k 02
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!