1100 Checkmate Calculator Board, Litronix, 1971

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  • Details
  • Description
Date Introduced
1971
Photographer
Richards, Mark
Dimensions
overall: 1/2 in x 2 7/8 in x 4 1/2 in
Manufacturer
Litronix
Copyright Owner
© Mark Richards
Object ID
500003005

The key semiconductor components of a 1970s consumer calculator are the MOS logic chip, bipolar LED driver, and GaAs LED display.