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Kmart Corporation KMC 2000

Date of introduction:  September 1981 Display technology:  LCD
New price:  $12.95 (SRP Sep. 1981) Display size:  8
Size:  3.6" x 2.3" x 0.3"
 91 x 57 x 8 mm3
   
Weight:  1.3 ounces, 38 grams Serial No:  200005 004884
Batteries:  2*LR43 Date of manufacture:  mth 05 year 1982
AC-Adapter:   Origin of manufacture:  Taiwan
Precision:  8 Integrated circuits:  NEC uPD1832G
Memories:  1    
Program steps:   Courtesy of:  Joerg Woerner
    Download manual:   (US: 2.8 MByte)

Does this KMC 2000 calculator sold in 1984 by Kmart Corporation look familiar to you? Please compare it with the TI-1788 or Privileg LC 6000, Radio Shack EC-303, Systema LC1400 and probably many more offspring.

The KMC 2000 calculator introduced in 1981 combines in a very compact package both a calculator with 3-Key Memory and a clock with alarm-time. We know similar, but larger products including a stopwatch since 1978 with the Canon LC Quartz, Toshiba LC-833WA, and Texas Instruments TI-1790.

Dismantling this KMC 2000 calculator manufactured in May 1982 by a non-disclosed Original Equipment Manufacturer (OEM) reveals a very clean design centered around a NEC uPD1032G single-chip calculator circuit soldered on a double-sided printed circuit board (PCB) and powered by two small LR43 batteries.

Inspecting the PCB of this KMC 2000 calculator brought our attention to a small mark reading CC-31 A1, we noticed similar marks already with the TI-1788, TI-1788 II and TI-1788 III, the latter manufactured by Compal Electronics and started compiling a list of the PCB-Marks on calculators manufactured by OEMs for Texas Instruments.



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

Joerg Woerner, April 22, 2020. No reprints without written permission.