DATAMATH CALCULATOR MUSEUM
|
DATAMATH CALCULATOR MUSEUM |
Texas Instruments TI-30X IIS (Dark Navy 2019)
| Date of introduction: | 2019 | Display technology: | LCD |
| New price: | $19.95 | Display size: | 11 characters and 10 +2 |
| Size: | 6.1" x 3.2" x 0.6" 154 x 83 x 15 mm³ |
||
| Weight: | 3.3 ounces, 94 grams | Serial No: | |
| Batteries: | Solar cells + CR2025 (60µA) | Date of manufacture: | mth 02 year 2023 (R) |
| AC-Adapter: | Origin of manufacture: | Philippines (L) | |
| Precision: | 13 | Integrated circuits: | |
| Memories: | 5 | ||
| Program steps: | Courtesy of: | Joerg Woerner |
Texas
Instruments introduced in 1999 with the TI-30X IIS
a new feature for its everlasting TI-30
series, a 2-line display. The appearance of the
TI-30X IIS was slightly updated in 2004, when the display bezel was changed
from plastic to aluminum. While the TI-30X IIS went in the 20 years since
November 2004 through multiple internal redesigns and was manufactured by three
different companies, namely Inventec Shanghai, Kinpo Electronics, Inc. and Nam
Tai Electronics, Inc., was the external design not touched. In 2015 the
production of the TI-30X IIS was shifted from China to the Philippines and in
2019 the design of its packaging updated. In November 2024 the coloring scheme
of the keyboard was slightly changed and the
TI-30X IIS should be ready for the next 20 years...
Disassembling
the featured Dark Navy TI-30X IIS manufactured February 2023 by Kinpo Electronics, Inc.
in the Philippines reveals a well known internal construction centered around an
unknown single-chip calculator circuit and powered by four small solar cells and
a CR2025 backup battery. Comparing this TI-30X IIS calculator with Date code
L-0223R with a TI-30X IIS
with Date code L-0420Q (Kinpo, April 2020) and with a
TI-30X IIS with Date code L-0624V (Kinpo, June
2024) yields no
significant differences, just a slightly different placement of some electronic
components like resistors and capacitors.
Inspecting the
PCBs of this TI-30X IIS calculator brought our attention to two small marks reading
SR16N/N1-11 and SR16/SR16B-23, we noticed similar marks already with other
Slide Rule calculators manufactured by Kinpo
Electronics and started compiling a list of the
PCB-Marks on calculators
manufactured by OEMs for Texas Instruments.
If you have additions to the above article please email: joerg@datamath.org.
© Joerg Woerner, February 15, 2025. No reprints without written permission.