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Texas Instruments TI-108

Date of introduction:  1986 Display technology:  LCD
New price:  ($5.95 in 1988)  Display size:  8
Size:  4.6" x 2.5" x 0.40"
 116 x 64 x 10 mm3
   
Weight:  1.6 ounces, 44 grams Serial No:  
Batteries:  n.a. Date of manufacture:  mth 08 year 1988
AC-Adapter:   Origin of manufacture:  Taiwan (C)
Precision:  8 Integrated circuits:  Sharp LI3135MS
Memories:  1    
Program steps:   Courtesy of:  Mark Bollman

TI-108_C0888_Back.jpg (154636 Byte)Texas Instruments introduced the TI-108 in 1986 as a slightly modification of the TI-1706 II. While the design and even printed circuit board (PCB) of the two calculators are identical, sports the TI-108 a [+/-] key instead the [AC] key found with the TI-1706 II. The successor of the TI-1706 II, called TI-1106, is 100% identical with this early TI-108.

TI-108_C0888_PCB.jpg (189317 Byte)Dismantling this early TI-108 gives with the S32R-II designation on the printed circuit board (PCB) a hint to its true contract manufacturer. It seems to be a design of Kinpo Electronics, Inc. manufactured in its Compal Electronics, Inc. plant. Learn more about the Date codes used with Texas Instruments calculators. This calculator sports the Date code C-0888, in the same month production of the calculator was started at competitor Inventec Corporation, too.

Texas Instruments updated the design of its "Lifestyle" calculator line mid of the 80s to a slightly smaller form factor and as a consequence the apperance of the next TI-108 generation changed to the design most American elementary students know even today.

Please find a detailed overview of the different hardware versions of the TI-108 calculators  between 1988 and 2001 here.

Texas Instruments was always listening for the demands of the classroom. Read some guidelines how to select the right calculator to ensure long-term satisfaction:

Solar Power: Eliminates the need for batteries. The TI ANYLITE™ technology
   allows operation even in low light.
Durability: Plastic keys are tougher and more tamper-proof than rubber keys.
   An extra window protects the LCD display and the solar cells.
Keyboard: Color coding helps children quickly identify functional key groupings.
   Large, well spaced keys are easier to find and press.
Packaging: With a convenient storage caddy 10 or even 30 
   calculators are grouped together.
Functions: Choose a model with only the specific functions you need.
   Unnecessary functions clutter the keyboard and may impede a student's
   understanding of the concepts.

 

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

© Joerg Woerner, June 7, 2009. No reprints without written permission.