DATAMATH CALCULATOR MUSEUM |
Texas Instruments TI-5140
Date of introduction: | 1985 | Display technology: | Fluorescent |
New price: | Display size: | 12 | |
Size: | 9.3" x 8.3" x 2.0" 236 x 210 x 52 mm3 |
Printer technology: | Impact |
Weight: | 2 pounds 9 ounces 1165 grams |
Serial No: | 196975 |
Batteries: | Date of manufacture: | mth 06 year 1986 | |
AC-Adapter: | 120 V | Origin of manufacture: | Japan (T) |
Precision: | 12 | Integrated circuits: | NEC uPD1231G |
Memories: | 1 + 1 | ||
Program steps: | Courtesy of: | Joerg Woerner |
The TI-5140 printing desktop calculator was introduced in 1985 and fits neatly into the TI-5130 series started already in 1981.
Dismantling
this TI-5140 manufactured in June 1986 reveals a design almost identical with
the TI-5130.
The
main differences are the NEC uPD1231G single-chip calculator circuit and the
12-digit display compared to the uPD1234G chip driving a 10-digit display.
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.
If you have additions to the above article please email: joerg@datamath.org.
© Joerg Woerner, July 14, 2009. No reprints without written permission.