DATAMATH CALCULATOR MUSEUM
|The boxy design
of the Sanyo ICC-82D.
dismantled ICC-82D reveals a huge printed circuit board (PCB)
with the calculator brain,
display drivers and Nixie tubes; a hand-wired keyboard assembly and a sealed battery pack.
of the original ICC-82D (upper row) side-by-side
with the second version of the ICC-82D.
|Detail of one
|The calculator brain
four Sanyo chips (manufactured under license
General Instruments Corp.)
and the discrete display drivers. Please notice the different date codes of the 4 chips:
The LM8001, LM8002, and LM8003 were manufactured mid of 1970, the LM8004 mid of 1971.
The backside of the PCB gives an easy explanation: It was replaced end of 1971.
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© Joerg Woerner, March 29, 2003. No reprints without written permission.