DATAMATH CALCULATOR MUSEUM
Texas Instruments TI-56
|Date of introduction:||1986||Display technology:||LCD|
|New price:||Display size:||8 + 2|
|Size:|| 5.8" x 2.8" x 0.85"
147 x 72 x 22 mm3
|Weight:||3.0 ounces, 84 grams||Serial No:||84078|
|Batteries:||2*LR44||Date of manufacture:||mth 05 year 1985|
|AC-Adapter:||Origin of manufacture:||Taiwan (C)|
|Precision:||11||Integrated circuits:||CD4555, CD4556|
|Program steps:||56-0||Courtesy of:||Joerg Woerner|
You know this calculator? The TI-56 is the European version of the TI-55 III sold elsewhere.
Date code on the backside of this TI-56
reveals with Compal
Electronics a well known contract manufacturer still in business for Texas
Please notice the battery compartment of this TI-56. Calculators manufactured by Inventec Corporation make use of different battery contacts and an additional screw to fix the housing.
Even the printed circuit boards (PCB's) of the two sibblings manufactured in Taiwan differ completely. Inventec Corporation placed both Integrated Circuits (IC's) on one side, Compal Electronics used both sides of the PCB.
In 1985 Texas Instruments shifted production of the TI-56 from Taiwan to Italy. Two things happened:
|• The rigid PCB was changed to a flexible PCB.
• The "PROGRAMMABLE / CONSTANT MEMORY" designation was changed.
Don't miss the TI-56 manufactured in Italy.
1985 and 1986 Texas Instruments created an amazing number of different designs
in the "Second Generation - Slanted LCD" calculator series just by
moving production to far-east contract manufacturers, fetching manufacturing
back to their own facilities and revising the design. Please click on the
picture at the right as a switchboard to all known versions of the Second
Generation Slanted LCD calculators.
If you have additions to the above article please email: email@example.com.
© Joerg Woerner, May 23, 2005. No reprints without written permission.