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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
1.4" 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) |
Precision: | 10 | Integrated circuits: | TMS0981 |
Memories: | 1 | ||
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 40 and it's
successor
professional.
If you have additions to the above article please email: joerg@datamath.org.
© Joerg Woerner, December 29, 2015. No reprints without written permission.