DATAMATH CALCULATOR MUSEUM
|
DATAMATH CALCULATOR MUSEUM |
Radio Shack EC-497
| Date of introduction: | 1979 | Display technology: | LCD |
| New price: | Display size: | 8 (5 + 2) | |
| Size: | 5.3" x 2.8" x 0.45" 135 x 70 x 11 mm3 |
||
| Weight: | 2.3 ounces, 64 grams | Serial No: | 2952578 |
| Batteries: | 2*LR44 | Date of manufacture: | wk 25 year 1979 |
| AC-Adapter: | Origin of manufacture: | USA (ATA) | |
| Precision: | 11 | Integrated circuits: | TP0321 |
| Memories: | 1 | ||
| Program steps: | Courtesy of: | Marie Lisa Collas |
The
Radio Shack EC-497 LCD Scientific Calculator is nothing else than Texas
Instruments TI-50.
Dismantling
this EC-497 manufactured in Texas Instruments' Abilene, TX facility reveals the
TP0321 single-chip calculator circuit known already from the TI-50 introduced in
1978.
If you have additions to the above article please email: joerg@datamath.org.
© Joerg Woerner, May 29, 2016. No reprints without written permission.