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Heathkit IC-2009

Date of introduction:  December, 1972 Display technology:  LED
New price:  $99.95 Display size:  8
Size:  5.5" x 3.8" x 1.7"    
Weight:  11.3 ounces Serial No:  
Batteries:  6*AA Date of manufacture:  
AC-Adapter:   Origin of manufacture:  USA
Precision:  8 Integrated circuits:  TMS0103
Memories:      
Program steps:   Courtesy of:  Joerg Woerner

At first glance this early kit calculator sold by Heathkit looks like a Bowmar 901B.

IC-2009_PCB.jpg (91491 Byte)To stop any discussions about the source of this wonderful early IC-2009 we should explore the internal construction. Dismantling the calculator is pretty easy - memorize that it was sold as a do-it-yourself kit between December, 1972 and May, 1974.

The printed circuit board (PCB) of the IC-2009 is unique and completely different to the Bowmar line. Nevertheless there are a lot of similarities:

Original Klixon™ keypad manufactured by TI
TMS0103 calculator-on-a-chip by TI
Opto-stic LED display manufactured by Bowmar

The priced of the IC-2009 dropped down to $89.95 before the calculator was replaced with the IC-2006. The IC-2006 uses a much smaller housing with a complete different design. 



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

© Joerg Woerner, September 28, 2003. No reprints without written permission.