Texas Instruments TI-5142

Date of introduction:  1981 Display technology:  Fluorescent
New price:  $19.95 (SRP Sep. 1980) Display size:  12
Size:  10.4" x 8.1" x 2.5"
 265 x 206 x 63 mm3
Printer technology:  Impact
Weight:  2 pounds 15 ounces
 1340 grams
Serial No:  147965
Batteries:   Date of manufacture:  Japan
AC-Adapter:  120 V Origin of manufacture:  mth 12 year 1980
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 sibling 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 months to fit with the TI-5130. View the later TI-5142 here.

TI-5142_LBL.jpg (40987 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.



Find here an excerpt from the Texas Instruments Incorporated leaflet CL-199J dated 1981:


Business features plus plain paper printer and display.

When you’re getting down to business, here is the calculator to get. It has all the convenience features that help you get right answers.
Switch on the dependable 12-digit mechanical printer, which delivers a fast 2.5 lines per second when a record is needed. An easy-to-read, 12-digit vacuum fluorescent display with commas and decimal point lets you save on paper if you wish.
There are enough other features to solve most business and accountant problems like: Long-travel keyboard. Full-function memory. Mark up/down. Decimal point selection. Percent and Delta-percent keys. Plus/minus change. And a special dating/numbering key.
Heavy-duty construction helps it stand up to the tough day-today use.

© Texas Instruments, 1981

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© Joerg Woerner, June 13, 2003. No reprints without written permission.