Texas Instruments 1050 distributed by Koh-I-Noor Hardtmuth

Date of introduction:  1977 Display technology:  Fluorescent
New price:   Display size:  8
Size:  5.4" x 2.8" x 1.3"
 138 x 72 x 32 mm3
Weight:  3.5 ounces, 98 grams Serial No:  
Batteries:  9V  Date of manufacture:  wk 46 year 1977
AC-Adapter:  AC9180 Origin of manufacture:  USA (LTA)
Precision:  8 Integrated circuits:  TMC0921
Memories:  1    
Program steps:   Courtesy of:  Marie Collas

Within the TI-1000 family we discovered in the past ten years some very interesting design variations sold either as a Texas Instruments product, as a Texas Instruments product through different sales channels, or even without the TI logo. Just recall some TI-1000's, TI-1025's and TI-1050's:

Texas Instruments TI-1000 with a silver design instead the original gold design
The TI-1025 sold by by the Dutch department store HEMA
The "silver" calculators sold by Western Auto as Citation
The "brown" calculators sold by Western Auto as Citation
The "woody" calculators sold by Western Auto as Citation

And how does this Texas Instruments 1050 fit into the line? Thanks to our fellow calculator collector friend Michel Zwawiak in France, we know the roots of this strange product: It was sold in 1977 by Koh-I-Noor Hardtmuth, a manufacturer of pencils, pens and art supplies based in the Czech Republic and already known for the incredible Texas Instruments 30/super.






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Joerg Woerner, November 1, 2011. No reprints without written permission.