DATAMATH CALCULATOR MUSEUM
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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
1.4" 148 x 78 x 36 mm3 |
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| 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) |
| Precision: | 10 | Integrated circuits: | TMC1983 |
| Logic: | AOS - 4 Pending Operations, 15 () | ||
| Memories: | 1 | ||
| Program steps: | Courtesy of: | Fabrizio Corpetti |
Texas
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.
If you have additions to the above article please email: joerg@datamath.org.
© Joerg Woerner, November 25, 2022. No reprints without written permission.