DATAMATH CALCULATOR MUSEUM
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DATAMATH CALCULATOR MUSEUM |
Texas Instruments TI-18
| Date of introduction: | 1982 | Display technology: | LCD |
| New price: | Display size: | 8 | |
| Size: | 3.9" x 2.4" x 0.3" | ||
| Weight: | 1.6 ounces | Serial No: | 10 454171 |
| Batteries: | 2*LR43 | Date of manufacture: | |
| AC-Adapter: | Origin of manufacture: | Taiwan | |
| Precision: | 8 | Integrated circuits: | NEC uPD1831G |
| Memories: | 1 | ||
| Program steps: | Courtesy of: | Joerg Woerner |
This
is really a funny scientific calculator ! An identical calculator was sold as TI-1744,
the name of a BASIC calculator. But we know this confusion from other "scientific"
calculators of that time slot. Think about the TI-15.
Dismantling
the TI-18 reveals indeed an identical single-chip calculator circuit
manufactured by NEC.
The design of the TI-18 was slightly changed during the production run. Please notice the "AUTO SHUT OFF" description found on later TI-18.
TI-18? Read more about Chinese Lucky Numbers.
If you have additions to the above article please email: joerg@datamath.org.
© Joerg Woerner, October 18, 2004. No reprints without written permission.