DATAMATH CALCULATOR MUSEUM
Radio Shack EC-2008 (65-964)
|Date of introduction:||1986||Display technology:||LCD|
|New price:||$12.95 (SRP 1987)||Display size:||8|
|Size:|| 4.7" x 4.1" x
120 x 106 x 25 mm3
|Weight:||3.0 ounces, 86 grams||Serial No:|
|Batteries:||n.a.||Date of manufacture:||year 1987|
|AC-Adapter:||Origin of manufacture:||Taiwan|
|Program steps:||Courtesy of:||Joerg Woerner|
Radio Shack EC-2008 calculator look familiar to you?
Dismantling the featured EC-2008 manufactured in 1987 by Compal Electronics, an OEM (Original Equipment Manufacturer) in Taiwan, reveals a clean design centered around an unknown Toshiba single-chip calculator circuit soldered on a double-sided printed circuit board (PCB) and powered by solar cells.
Inspecting the PCB of this Radio Shack EC-2008 calculator brought our attention to a small mark reading SD10-10, most likely a reference to Type Small Desktop 10 and Revision 1.0 of the design (schematics and layout). We spotted a similar PCB-Mark SD9-14 already with the EC-2006A and its near identical offspring TI-1795 and started compiling a list of the PCB-Marks on calculators manufactured by OEMs for Texas Instruments.
The EC-2008 with 10-digits capacity was introduced shortly after the EC-2006A dropping the [+/-] key and introducing an [AC] key while switching from a Sharp brain to a Toshiba chip. Interesting to notice that Texas Instruments kept the SD9 design for about 15 years and used for the TI-1796 with 10-digits capacity a larger housing and different OEM before in 1996 switching with the TI-1795+ and TI-1796+ duo back to Radio Shack's approach.
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© Joerg Woerner, March 15, 2020. No reprints without written permission.