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Texas Instruments TI-5112

Date of introduction:  1980 Display technology:  LCD
New price:   Display size:  12
Size:  7.2" x 5.0" x 1.6"
 182 x 127 x 40 mm3
   
Weight:  9.7 ounces, 276 grams Serial No:  107924
Batteries:  2*AA Date of manufacture:  mth 12 year 1980
AC-Adapter:   Origin of manufacture:  Japan
Precision:  12 Integrated circuits:  Toshiba T6736S
Memories:  1    
Program steps:   Courtesy of:  Joerg Woerner

TI-5112_Back.jpg (286590 Byte)Compared with the later "Cheapos"  this TI-5112 feels very strong and solid. It features everything you need for the daily use on your desktop. 

A cheaper model was available almost three years later as TI-5020 and it took another year and the TI-5100 II upgraded the LC-Display to a green fluorescent display.

TI-5112_PCB.jpg (434373 Byte)Dismantling the TI-5112 reveals a clean design based on the Toshiba T6736S single-chip calculator circuit but hides the true manufacturer of the calculator. We suspect Toshiba based on the layout and appearance of the printed circuit board (PCB) but can't proof it.

 

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If you have additions to the above article please email: joerg@datamath.org.

Joerg Woerner, December 5, 2001. No reprints without written permission.