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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 Original Equipment Manufacturers (OEMs) in Far East, moving 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.