DATAMATH CALCULATOR MUSEUM
|
DATAMATH CALCULATOR MUSEUM |
Texas Instruments TI-52 (Italy)
| Date of introduction: | 1987 | Display technology: | LCD |
| New price: | Display size: | 10 + 2 | |
| Size: | 3.5" x 6.0" x 0.65" | ||
| Weight: | 4.0 ounces | Serial No: | |
| Batteries: | 2*LR44 | Date of manufacture: | wk 02 year 1990 |
| AC-Adapter: | Origin of manufacture: | Italy | |
| Precision: | 12 | Integrated circuits: | Toshiba T7767S |
| Memories: | 1 | ||
| Program steps: | Courtesy of: | Joerg Woerner | |
| Download manual, Addendum: |
(DE, FR: 11.8M Bytes)
(EU: 0.9M Bytes) |
In 1987 the complete design of the
TI-52
and its sibling TI-30 Galaxy was revised and production of
the calculators shifted from Japan to a Texas Instruments facility located in Rieti, Italy.
Dismantling
the featured TI-52 manufactured in February 1990 and comparing it with an
original TI-52 assembled in Japan reveals some
interesting differences. The original design makes use of two rigid printed
circuit boards (PCBs) while the second generation is based on only one,
two-sided flexible PCB.
The
position of the display was moved away from the upper boarder of the calculator
housing to allow the already from the TI-1030
known technology of contacting PCB traces with the LCD display using a metal
clamp.
Even
the battery compartment was redesigned and the orientation of the two batteries
changed.
If you have additions to the above article please email: joerg@datamath.org.
© Joerg Woerner, December 5, 2001. No reprints without written permission.