DATAMATH CALCULATOR MUSEUM
Texas Instruments TI-1775
|Date of introduction:||1989||Display technology:||LCD|
|New price:||Display size:||8|
|Size:||5.9" x 4.8" x 0.35"|
|Weight:||2.8 ounces||Serial No:|
|Batteries:||n.a.||Date of manufacture:||mth 01 year 1992|
|AC-Adapter:||Origin of manufacture:||Malaysia|
|Precision:||8||Integrated circuits:||Toshiba T9731BU|
|Program steps:||Courtesy of:||Joerg Woerner|
with the first version of the TI-1775 both the
size of the display and solar cells was reduced to lower manufacturing costs.
We couldn't resist to dismantle a TI-1775 calculator, please be aware that you have to use a kitchen knife ...
Removing the grey plastic sleeve reveals two surprisingly robust frames for the display and keyboard printed circuit boards (PCB's).
The upper half of the calculator holds not only the display and solar cells but even the Toshiba T9731BU single-chip calculator circuit.
Please notice that Canon sold with the LS-565H a similiar looking calculator manufactured in Malaysia, too. Probably both are OEM-products from the same company.
The next generation called TI-1775+ combined a smart housing with a clock.
If you have additions to the above article please email: firstname.lastname@example.org.
© Joerg Woerner, September 20, 2002. No reprints without written permission.