Fixed matches raul leon

Fixed matches raul leon
2 ) is a piece of stiff paper that holds digital data represented by the presence or absence of holes in predefined positions.

Punched cards were once common in data processing applications or to directly control automated machinery.

Punched cards were widely used through much of the 20th century in the data processing industry, where specialized and increasingly complex unit record machines, organized into semiautomatic data processing systems, used punched cards for data input, output, and storage.

3 4, the IBM 12-row/80-column punched card format came to dominate the industry.

Many early digital computers used punched cards as the primary medium for input of both computer programs and data.

While punched cards are now obsolete as a storage medium, as of 2012, some voting machines still used punched cards to record votes.

5, they also had a significant cultural impact.

Close-up of a, jacquard loom 's chain, constructed using 8 26 hole punched cards.

Contents, history edit, the idea of control and data storage via punched holes was developed over a long period of time.

In most cases there is no evidence that each of the inventors was aware of the earlier work.

Precursors edit Basile Bouchon developed the control of a loom by punched holes in paper tape in 1725.

The design was improved by his assistant Jean-Baptiste Falcon and by Jacques Vaucanson.

6 Although these improvements controlled the patterns woven, they still required an assistant to operate the mechanism.

In 1804 Joseph Marie Jacquard demonstrated a mechanism to automate loom operation.

A number of punched cards were linked into a chain of any length.
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