Texas Instruments TI-108

Date of introduction:  2016 Display technology:  LCD
New price:  $7.95 (SRP 2017)  Display size:  8
Size:  4.3" x 2.5" x 0.40"
 110 x 64 x 10 mm3
Weight:  1.5 ounces, 44 grams Serial No:  
Batteries:  LR1130 Date of manufacture:  mth 02 year 2016
AC-Adapter:   Origin of manufacture:  Philippines (L)
Precision:  8 Integrated circuits:  
Memories:  1    
Program steps:   Courtesy of:  Joerg Woerner

It was quite a surprise when we learned in July 2017 from Michael MacEachern that he just acquired a TI-108 manufactured in March 2017. He noticed some interesting differences compared to the four TI-108 versions we had as of July 2017 exhibited in the Datamath Calculator Museum:

Missing gray bezel for the display frame.
Larger numbers on the LC Display.
Internal backup battery.
TI logo printed in white.

Trying to fill the voids we screened many ebay Auctions in the following months and discovered in addition to this design introduced in or around 2014, a TI-108 manufactured in August 2008 and a TI-108 manufactured in July 2014. Please find a detailed overview of the different hardware versions of the TI-108 calculators between 1988 and 2016 here.

Dismantling this TI-108 manufactured in February 2016 by Kinpo Electronics in the Philippines reveals a pretty simple internal construction from the Nineties that is identical with the earlier design manufactured in China.

The unknown single-chip calculator circuit of this TI-108 is hidden under a small epoxy blob.

Stokes Publishing Company, Inc. based in Sunnyvale, California sold a companion for the teacher, view the Basic.


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If you have additions to the above article please email:

Joerg Woerner, December 27, 2017. No reprints without written permission.