DATAMATH CALCULATOR MUSEUM
Texas Instruments 45 distributed by Koh-I-Noor Hardtmuth
|Date of introduction:||1977||Display technology:||Fluorescent|
|New price:||Display size:||8 (5 + 2)|
|Size:|| 5.8" x 3.1" x
148 x 78 x 36 mm3
|Weight:||5.0 ounces, 142 grams||Serial No:||416678|
|Batteries:||BP8, BP9||Date of manufacture:||wk 09 year 1978|
|AC-Adapter:||AC9900/R||Origin of manufacture:||Italy (RCI)|
|Program steps:||Courtesy of:||Fabrizio Corpetti|
Instruments 45? We were really surprised to locate in December 2021 this unusual
looking calculator on the Italian eBay site. It is obvious that the model
45 - manufactured exclusively for Koh-I-Noor
Hardtmuth - is based on the European TI-45 but changed the appearance
dramatically by replacing the black faceplate with a yellow-brown one.
Dismantling this model 45 manufactured in February 1978 by Texas Instruments in their Rieti, Italy facility reveals a standard TI-45 printed circuit board (PCB) with the well-known TMC1983 single-chip calculator circuit.
Interesting to see the model 45 pictured on the Koh-I-Noor product manual with a faceplate colored like a Business Analyst-I.
Don't miss the similar looking model 40 and the model Studio 29.
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© Joerg Woerner, November 25, 2022. No reprints without written permission.