DATAMATH CALCULATOR MUSEUM
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DATAMATH CALCULATOR MUSEUM |
Texas Instruments TI-1100 II (Prototype)
| Date of introduction: | (1985) | Display technology: | LCD |
| New price: | Display size: | 8 | |
| Size: | 4.4" x 2.6" x 0.35" 112 x 65 x 8 mm³ |
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| Weight: | 1.8 ounces, 51 grams | Serial No: | |
| Batteries: | LR43 | Date of manufacture: | mth 10 year 1984 |
| AC-Adapter: | Origin of manufacture: | Taiwan (I) | |
| Precision: | 8 | Integrated circuits: | Toshiba T6958S |
| Memories: | 1 | ||
| Program steps: | Courtesy of: | Joerg Woerner |
The
TI-1100 II followed the short-lived TI-1100
introduced in 1983 and features an enhanced keyboard.
Dismantling
this TI-1100 II Prototype manufactured in October 1984 by Inventec
Corporation in Taiwan reveals a clean design centered around a Toshiba
T6985S single-chip calculator soldered on a single-sided printed circuit board
(PCB) and powered by a LR43 battery. Please notice that the original TI-1100
used a single-sided PCB too, while the final design of the TI-1100 II switched
to a double-sided PCB.
Inspecting
the PCB of this TI-1100 II Prototype calculator brought our attention to two small marks reading
ITI1100-02A respectively
ITI1101-02A and 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, May 20, 2020. No reprints without written permission.