DATAMATH CALCULATOR MUSEUM
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DATAMATH CALCULATOR MUSEUM |
The Educator® Intermediate
| Date of introduction: | 1997 | Display technology: | LCD |
| New price: | $85 | Display size: | 8 |
| Size: | 8.0" x 4.0" x 0.30" | ||
| Weight: | 4.8 ounces | Serial No: | |
| Batteries: | n.a. | Date of manufacture: | |
| AC-Adapter: | Origin of manufacture: | China | |
| Precision: | 12 | 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".
Both the keyboard and the display are made from translucent glass and plastics. Using a simple overhead projector the teacher could demonstrate easily the function of a calculator.
The successor of the original Intermediate emulates the Texas Instruments TI-12 Math Explorer with integer division, floating negative sign, fifteen levels of parentheses, fixed decimal capability, fraction to decimal conversion and vice versa, and true algebraic logic.
Overhead™ Calculator is a trademark
of Stokes Publishing Company, Inc.
AOS™ is a trademark
of Texas Instruments.
If you have additions to the above article please email: joerg@datamath.org.
© Joerg Woerner, March 5, 2004. No reprints without written permission.