DATAMATH CALCULATOR MUSEUM
Texas Instruments TI-57 II
|Date of introduction:||1985||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:||0012119|
|Batteries:||2*LR44||Date of manufacture:||mth 11 year 1984|
|AC-Adapter:||Origin of manufacture:||Taiwan|
|Precision:||11||Integrated circuits:||CD4555, CD4572|
|Program steps:||48-0||Courtesy of:||Stefan Klaes|
(IT: 10.6 MByte)
(GB: 9.6 MByte)
If you read the technical comments on the TI-55 III you know the reason why Texas Instruments introduced 1985 the TI-57 II.
From the technical point of view the calculators are similar, both use identical displays and integrated circuits. The main difference is the quality of the keyboard and the internal construction.
Instead a flexible Printed Circuit Board (PCB) used in the predecessor TI-57
LCD this calculator sports a rigid PCB construction.
In 1985 Texas Instruments shifted production of the TI-57 II from Taiwan to Italy. Two things happened:
• The rigid PCB was changed to a flexible PCB.
Don't miss the TI-57 II 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, November 10, 2004. No reprints without written permission.