The work of counting or tabulating on the machines can be so arranged that, within a few hours after the last card is punched, the first set of tables, including condensed grouping of all the …

ulating machine were a step forward toward automated computation. His device could automatically read information that had been punched on to the card, but the machine was limited

For a group of cards punched gaining a basic knowledge of the principles like that shown in Figure 2 (Example 1), of tabulating machine methods of analysis, the sorting sequence would …

In 1896, Hollerith formed the Tabulating Machine Company, opening a shop in the Georgetown neighborhood of Washington, DC. He provided machines for the 1900 census count, but had …

Hollerith’s inventions of punched card tabulating machines was the start of a long period of the use of mechanical/electrical data processing systems. He continued to innovate and invent, …

Each machine is not so much a new mechanism as it is the source of a new method designed to save money and increase profits.

d States. Beginning in the early 1880s, Herman Hollerith (1 860-1929) developed a range of equipment for the mechanical tabulation of the 1890 United States census; this machinery saw …