X-Nico

14th Weather Squadron

The cards, developed by Herman Hollerith for use in the 1890 U.S. Census, made the use of historical weather records a practical means for determining the probability of future weather events and patterns.

Computer: A History of the Information Machine

It follows the history of "information machines" from Charles Babbage's Difference Engine through Herman Hollerith's Tabulating Machines to the invention of the modern electronic digital computer.

Data processing

The term automatic data processing was applied to operations performed by means of unit record equipment, such as Herman Hollerith's application of punched card equipment for the 1890 United States Census.

Flat file database

Herman Hollerith conceived the idea that census data could be represented by holes punched in paper cards and tabulated by machine.

Fredrik Rosing Bull

His machine was substantially better than its competition, Hollerith and Powers, through the mechanism of punched card pre-selection.

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This team provided several and more effective new ideas the Bull machine, causing it to be superior to the Hollerith's one used then, the IBM precursor.

IBM 407

The IBM 407 Accounting Machine, introduced in 1949, was one of a long line of IBM tabulating machines dating back to the days of Herman Hollerith.

International Computers and Tabulators

Before the merger, under BTM, this had been known as the HEC4 (Hollerith Electronic Computer, fourth version).

Pantograph

Herman Hollerith's "Keyboard punch" used for the 1890 U.S. Census was a pantograph design and sometimes referred to as "The Pantograph Punch".

Paper data storage

In the late 1880s Herman Hollerith invented the recording of data on a medium that could then be read by a machine.

Radix sort

Radix sort dates back as far as 1887 to the work of Herman Hollerith on tabulating machines.