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Radio Shack EC-100 (Second Version)

Date of introduction:  1973 Display technology:  LED-modules
New price:  $129.95 Display size:  8
Size:  5.8" x 3.5" x 1.5"
 147 x 88 x 38 mm3
   
Weight:  6.7 ounces, 191 grams Serial No:  A 16983
Batteries:  4*AA Date of manufacture:  
AC-Adapter:   Origin of manufacture:  
Precision:  8 Integrated circuits:  
Memories:      
Program steps:   Courtesy of:  Joerg Woerner

This Radio Shack Electronic Calculator EC-100 seems to be a minor variation of the original EC-100 with a small metal piece covering the "K" on the keyboard switch.

Dismantling this Radio Shack EC-100 manufactured in 1973 reveals a well-known design centered around a TMS0100-series single-chip calculator circuit from Texas Instruments.

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If you have additions to the above article please email: joerg@datamath.org.

Joerg Woerner, December 29, 2017. No reprints without written permission.