DATAMATH CALCULATOR MUSEUM
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DATAMATH CALCULATOR MUSEUM |
Radio Shack EC-2006A (65-962A)
| Date of introduction: | 1984 | Display technology: | LCD |
| New price: | $14.95 (SRP 1985 EC-2006) $12.95 (SRP 1986 EC-2006A) |
Display size: | 8 |
| Size: | 4.7" x 4.1" x
1.0" 120 x 106 x 25 mm3 |
||
| Weight: | 3.0 ounces, 86 grams | Serial No: | |
| Batteries: | n.a. | Date of manufacture: | year 1986 |
| AC-Adapter: | Origin of manufacture: | Taiwan | |
| Precision: | 8 | Integrated circuits: | Sharp LI3135MS |
| Memories: | 1 | ||
| Program steps: | Courtesy of: | Joerg Woerner |
Does this
Radio Shack EC-2006A calculator look familiar to you?
Dismantling
the featured EC-2006A manufactured in 1986 by
Compal Electronics, an
OEM (Original Equipment Manufacturer) in Taiwan, reveals a clean design
centered around a Sharp LI3135MS 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-2006A calculator brought our attention to a small mark reading
SD9-14, most likely a reference to Type
Small Desktop 9 and Revision 1.4
of the design (schematics and layout). We spotted this PCB-Mark already with the near identical offspring
TI-1795 and started compiling a list
of the PCB-Marks on calculators
manufactured by OEMs for Texas Instruments. Meet Kmart
Corporation's KMC 100B - the first
born SD9 calculator with Revision 10.
The EC-2006A was soon replaced with the EC-2008 sporting 10-digits capacity and dropping the [+/-] key
while introducing an [AC] key.
If you have additions to the above article please email: joerg@datamath.org.
© Joerg Woerner, March 15, 2020. No reprints without written permission.