DATAMATH CALCULATOR MUSEUM
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DATAMATH CALCULATOR MUSEUM |
Texas Instruments TI-1105 (Second Design, Turquoise)
| Date of introduction: | 1988 | Display technology: | LCD |
| New price: | Display size: | 8 | |
| Size: | 4.3" x 2.5" x
0.40" 110 x 64 x 10 mm3 |
||
| Weight: | 1.5 ounces, 44 grams | Serial No: | |
| Batteries: | n.a. | Date of manufacture: | mth 02 year 1988 (A) |
| AC-Adapter: | Origin of manufacture: | Taiwan (I) | |
| Precision: | 8 | Integrated circuits: | |
| Memories: | 1 | ||
| Program steps: | Courtesy of: | Joerg Woerner |
Bold
and lively colors, large keys, solar and lots of functionality - this is the
marketing description of the TI-1105 introduced in
1987. This second generation of the TI-1105 added the [+/-] key known already
from the TI-108.
Three different colors were introduced:
| • TI-1105 Turquoise • TI-1105 Magenta • TI-1105 Dark Blue |
Dismantling
this second generation TI-1105 manufactured in February 1988 by Inventec Corporation in
Taiwan reveals a clean design centered around an unknown single-chip calculator
circuit soldered on a double-sided printed circuit board (PCB) and powered by
four solar cells.
Inspecting
the PCB of this TI-1105 calculator brought our attention to a small mark reading
IOTI108A-02A, obviously a reference to the second generation of
the TI-108 introduced in 1988, too. We 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, April 5, 2024. No reprints without written permission.