DATAMATH CALCULATOR MUSEUM
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DATAMATH CALCULATOR MUSEUM |
Texas Instruments TI-1100 II (1st design)
| 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 03 year 1985 |
| AC-Adapter: | Origin of manufacture: | Taiwan (I) | |
| Precision: | 8 | Integrated circuits: | Toshiba T6958S |
| Memories: | 1 | ||
| Program steps: | Courtesy of: | Joerg Woerner | |
| Download leaflet: | 
(US: 0.6 MByte) |
The
TI-1100 II received an enhanced keyboard compared to the original TI-1100 introduced
two years earlier, please study the sales box of a TI-1100 II sold in 1985 in
the United States. Another few years later a similar calculator appeared again
as TI-1100.
Dismantling
this featured TI-1100 II from the 1st design manufactured in March
1985 by Inventec
Corporation in Taiwan reveals a clean design centered around a Toshiba
T6985S single-chip calculator soldered on a double-sided printed circuit board
(PCB) and powered by a LR43 battery.
Inspecting
the PCB of this TI-1100 II calculator brought our attention to a small mark reading
IOOTI1100-02D and we started compiling a list of the
PCB-Marks on calculators manufactured by OEMs for Texas Instruments.
Within one year the display size of the calculator
was slightly increased, please notice the width of the display frame of the 2nd
design of the TI-1100 II.
If you have additions to the above article please email: joerg@datamath.org.
© Joerg Woerner, April 23, 2008. No reprints without written permission.