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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:  
Batteries:  2*LR44 Date of manufacture:  wk 46 year 1985
AC-Adapter:   Origin of manufacture:  Italy
Precision:  11 Integrated circuits:  CD4555, CD4572
Memories:  1-7    
Program steps:  48-0 Courtesy of:  Stefan Klaes
    Download manual:   (IT: 10.6 MByte)
  (GB: 9.6 MByte)

TI-57II_IC.jpg (41308 Byte)Production of the TI-57 II was shifted in 1985 from Taiwan to Italy. The internal construction was completely revised, instead a rigid Printed Circuit Board (PCB) of the Far East calculator we noticed a flexible PCB.

In 1986 Texas Instruments changed the design of the "2nd generation slanted calculators" again. If you compare this TI-57 II introduced in the year 1985 with the later TI-57 II (1986) focus yourself on the position of the TI logo.

TI-55-III_Switch.jpg (21749 Byte)Between 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.

 

 



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

Joerg Woerner, May 13, 2002. No reprints without written permission.