All Subjects
      All Types

        Info

        Grades

        1-12

        Permitted Use

        Stream, Download, Share, and Modify


        2 Favorites
        14 Views

        Office Calculator | History of the Computer

        1955: A woman operating a Hollerith Senior Rolling Total Tabulator, the main machine in punch-card accounting, it adds, subtracts and balances figures in any or all of its six counters. (Photo by Hulton Archive/Getty Images)

        You must be logged in to use this feature

        Need an account?
        Register Now