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Texas Instruments TI-5142

Date of introduction:  1982 Display technology:  Fluorescent
New price:   Display size:  12
Size:  10.4" x 8.1" x 2.5"
 265 x 206 x 63 mm3
Printer technology:  Impact
Weight:  3 pounds 0 ounces
 1355 grams
Serial No:  592247
Batteries:   Date of manufacture:  mth 12 year 1982
AC-Adapter:  120 V Origin of manufacture:  Japan
Precision:  12 Integrated circuits:  NEC uPD1224G
Memories:  1 + 1    
Program steps:   Courtesy of:  Joerg Woerner

The TI-5142 continued the design line started with the TI-5040 and its 12-digits sibbling TI-5220. Compared with the earlier products the TI-5142 uses a mechanical printer which delivers 2.5 lines per second on plain paper. The styling of this TI-5142 was adopted within month to fit with the TI-5130. View the original TI-5142 here.

TI-5142_2_PCB.jpg (108613 Byte)The internal construction of the TI-5142 is typical for a Japanese calculator: Only few components fitted directly in the bottom shell of the housing.

TI-5142_2_LBL.jpg (43301 Byte)Since we deciphered the product label of the TI-5310 matching the UL-File number E42662 with a identification code 694B, we know with Toshiba TEC Corp. the manufacturer of this calculator, too.

Don't miss the database of all known UL-File numbers found on Texas Instruments calculators.

In 1983 Texas Instruments changed the design line again to the "office grey" colouring schema of other office products. The desktop line covered then 6 different calculators:

bulletTI-5008    Pocket-sized, thermal printing
bulletTI-5010    Small-sized, standard paper
bulletTI-5032    Desktop-sized, battery option
bulletTI-5130    10-digits, standard paper
bulletTI-5142-III 12-digits, standard paper
bulletTI-5020    Non-printing, solar powered

 



The TI-5142 is featured in the Texas Instruments Incorporated leaflet CL-199M dated 1983.

 

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

Joerg Woerner, November 12, 2003. No reprints without written permission.