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.

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© Joerg Woerner, January 16, 2011. No reprints without written permission.