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Texas Instruments TI-25 (Yellow Polarizer)

Date of introduction:  1978 Display technology:  LCD (yellow)
New price:   Display size:  8 (5 + 2)
Size:  5.3" x 2.9" x 0.35"    
Weight:  3.0 ounces Serial No:  93595
Batteries:  2*LR44 Date of manufacture:  mth 05 year 1978
AC-Adapter:   Origin of manufacture:  Japan
Precision:  9 Integrated circuits:  
Memories:  1    
Program steps:   Courtesy of:  Joerg Woerner
    Download manuals:   (US: 6.7 MByte)
  (EU: 18.6 MByte)

This TI-25 with unknown history seems to be a misfit: The yellow polarizer filter covering the liquid crystal display would suggest that it older than the first version of the TI-25. The green [ON/C] key on the other hand would place it the time frame of the second version of the TI-25. The date code finally matches the first version.

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

Joerg Woerner, February 17, 2011. No reprints without written permission.