DATAMATH CALCULATOR MUSEUM
Texas Instruments Studio 29 (gold) distributed by Koh-I-Noor Hardtmuth
|Date of introduction:||1977||Display technology:||LED-stick|
|New price:||Display size:||8 (5 + 2)|
|Size:|| 5.8" x 3.1" x
148 x 78 x 36 mm3
|Weight:||4.0 ounces, 114 grams||Serial No:||696129|
|Batteries:||9V or RK2||Date of manufacture:||wk 48 year 1977|
|AC-Adapter:||AC9900/R||Origin of manufacture:||Italy (RCI)|
|Program steps:||Courtesy of:||Joerg Woerner|
Texas Instruments Studio 29? We were really surprised to locate in December 2015 this unusual looking calculator on the Italian eBay site. At first glance the Studio 29 - manufactured for Koh-I-Noor Hardtmuth - looks like a hybrid of two different products:
|• The basic functionality
is borrowed from the TI-15 introduced in 1976
• The yellow-brown keyboard plate is... unique
Looking closer at the Studio 29 reveals a strange difference to the TI-15 sold in Europe - the [K]-key is missing!
Dismantling this Studio 29 manufactured in November 1977 reveals a standard TI-30 printed circuit board (PCB) with the well-known TMS0981 single-chip calculator circuit.
Don't miss later Studio 29 with its
silver keyboard plate, the model 45, model 40, and it's
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© Joerg Woerner, December 29, 2015. No reprints without written permission.