DATAMATH

DATAMATH CALCULATOR MUSEUM

Heathkit IC-2008

Date of introduction:	March, 1972	Display technology:	Panaplex II
New price:	$139.95	Display size:	8
Size:	10.3" x 6.2" x 3.5"
Weight:	3 pounds 1 ounces	Serial No:	1234
Batteries:		Date of manufacture:	1972
AC-Adapter:	120 V or 240 V	Origin of manufacture:	USA
Precision:	8	Integrated circuits:	TMS1875
Memories:
Program steps:		Courtesy of:	Bob McGarrah

If you know a solder iron you know Heathkit. This US company is known for their electronic hobbyist kits. They sold some electronic calculators like this IC-2008 desktop or the IC-2006 battery operated portable calculator.

The first products based on the single-chip calculator technology introduced by Texas Instruments. Bob, the owner of this wonderful IC-2008 calculator discovered the TMS1875 chip never seen before. Comparing the schematic diagrams of both the IC-2008 and the later IC-2008A gives an interesting result: The TMS1875 is a member of the TMS0100 family but misses the "Segment driver H output".

The inside view of the IC-2008A gives you a perfect engineered calculator like all Heathkit products. The rare TMS1875 calculator chip is surrounded by a heavy keyboard, three Panaplex II SP-753 displays manufactured by Sperry and the unusual thumbwheel to select the position of the decimal point.

The calculator was soon replaced with the IC-2008A, the differences aren't explored yet.

Other calculators using the single-chip calculator technology introduced by Texas Instruments were the TI-3000, Canon L100S and Toshiba BC-0802.

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