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Hollerith 45 column horizontal electrical sorting machine, 1920-1930

Hollerith 45 column horizontal electrical sorting machine, 1920-1930

1920-1930
Data processing system

Data processing system

Processing units and desk frame for ERNIE 3 (Electronic Random Number Indicator Equipment) from National Savings and Investment, used between 1988-2004.

Processing Units and Desk Frame for ERNIE 3