A CDE Definition
A machine that added up numerical data in punch cards. Tabulators were used to prepare invoices, checks and "green-striped" reports as late as the 1970s. Invented by Herman Hollerith in 1890, his tabulator displayed the totals on dials. Subsequent models were able to perform additional arithmetic operations as well as print the results. See Hollerith machine, punch card and continuous forms.
First Tabulator - 1890 U.S. Census
A Tabulator in the 1960s
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