DATAMATH CALCULATOR MUSEUM
|
DATAMATH CALCULATOR MUSEUM |
The Educator® Business
| Date of introduction: | 1995 | Display technology: | LCD |
| New price: | Display size: | 3 Alpha + 7 | |
| Size: | 2.9" x
4.4" x 0.5" 74 x 113 x 13 mm3 |
||
| Weight: | 2.5 ounces, 70 grams | Serial No: | |
| Batteries: | 2*CR2032 | Date of manufacture: | |
| AC-Adapter: | Origin of manufacture: | China | |
| Precision: | 7 | Integrated circuits: | |
| Memories: | 1 | ||
| Program steps: | Courtesy of: | Joerg Woerner |
The
California based company Stokes Publishing Company, Inc. distributes under the label
"The Educator®" calculators optimized for teaching purposes. William
T. Stokes filed already July 30, 1991 the US Patent Application U.S.
Pat. No. 5,035,502 with the title "Transparent calculator for overhead
projection".
This
Apothecalc - the successor of the original
Apothecalc introduced
in 1988 by New Specialties, Inc. based in Vidalia, Georgia and based on
the TI-35-II scientific
calculator - is one of the few "non-translucent" calculators from Stokes
Publishing.
Compared
with the Texas Instruments' design of the Apothecalc we noticed a few
differeneces:
| • Additional key for
backlit display • Additional key for square root function and internal beeper control • Second CR2032 battery for backlit display |
Overhead™ Calculator is a trademark
of Stokes Publishing Company, Inc.
If you have additions to the above article please email: joerg@datamath.org.
© Joerg Woerner, January 16, 2011. No reprints without written permission.