Radio Shack statesman EC-318

Date of introduction:  October 1988 Display technology:  LCD
New price:  $14.95 (SRP 1989) Display size:  8
Size:  4.4" x 2.6" x 0.30"
 113 x 67 x 8 mm3
Weight:  1.8 ounces, 52 grams Serial No:  
Batteries:  n.a. Date of manufacture:  mth 07 year 1990
AC-Adapter:   Origin of manufacture:  Taiwan
Precision:  8 Integrated circuits:  
Memories:  1    
Program steps:   Courtesy of:  Joerg Woerner

Does this EC-318 Metric Conversion Calculator look familiar to you? Please compare it with the TI-1895 II.

Dismantling this EC-318 Metric Conversion Calculator manufactured in July 1990 by Cal-Comp Electronics in Taiwan reveals a typical design of a Far East contract manufacturer centered around an unknown single-chip calculator circuit. Learn how to decipher the 7A0 Date code on the pictured calculator.

Inspecting the PCB of this Radio Shack EC-318 calculator brought our attention to a small mark reading S39A-12, we spotted this mark already with the TI-1895 II and started compiling a list of the PCB-Marks on calculators manufactured by OEMs for Texas Instruments.

If you are interested in really powerful metric conversion calculators, look for either the Canon FC-80 or the TI-1890.

If you have additions to the above article please email:

Joerg Woerner, April 26, 2020. No reprints without written permission.