punched card

punched card. The concept of punched cards originated with Joseph Marie Jacquard, who invented the Jacquard loom in 1801, and was later developed by Herman Hollerith for use in the 1890 United States Census. This innovation led to the creation of the Hollerith tabulating machine, which was used by the US Census Bureau and later by IBM. The use of punched cards became widespread in various industries, including NASA, Harvard University, and Bell Labs.

● History of Punched Cards

The history of punched cards dates back to the early 19th century, when Charles Babbage designed the Analytical Engine, which would have used punched cards to input data. However, it was Herman Hollerith who first developed a practical system for using punched cards in the late 19th century, with the support of Columbia University and the US Census Bureau. The first commercial punched card machines were produced by the Hollerith Tabulating Machine Company, which later became IBM. Punched cards were used in various applications, including the 1910 United States Census, the 1920 United States Census, and the 1936 Summer Olympics. The development of punched cards was also influenced by the work of Ada Lovelace, who is considered the first computer programmer, and Alan Turing, who developed the Theoretical Computer Science.

● Design and Format

The design and format of punched cards varied over time, but the standard format developed by Herman Hollerith consisted of an 80-column card with rectangular holes. The cards were made of paper or cardboard and were typically 3.25 inches by 7.375 inches in size. The format was widely adopted by IBM, Remington Rand, and other manufacturers, and was used in a variety of applications, including data processing, scientific computing, and cryptography. The development of punched cards was also influenced by the work of Konrad Zuse, who developed the Z3 computer, and John von Neumann, who developed the EDVAC computer. Punched cards were used by Los Alamos National Laboratory, MIT, and Stanford University.

● Data Processing Applications

Punched cards were widely used in data processing applications, including census data, payroll processing, and inventory management. The use of punched cards enabled the efficient processing of large amounts of data, and was a key factor in the development of the computer industry. Punched cards were used by General Electric, AT&T, and The New York Times, among others. The development of punched cards was also influenced by the work of Grace Hopper, who developed the COBOL programming language, and John Mauchly, who developed the ENIAC computer. Punched cards were used in various applications, including the 1950 United States Census, the 1960 United States Census, and the Apollo 11 mission.

● Punched Card Machines

Punched card machines were developed to read, sort, and process punched cards. The first punched card machines were developed by Herman Hollerith and were used in the 1890 United States Census. Later machines, such as the IBM 407, were developed for commercial use and were widely adopted by businesses and governments. Punched card machines were used by NASA, Harvard University, and Bell Labs, among others. The development of punched card machines was also influenced by the work of Claude Shannon, who developed the information theory, and Vannevar Bush, who developed the Memex machine. Punched card machines were used in various applications, including the 1940 United States Census, the 1950 United States Census, and the 1964 Summer Olympics.

● Decline and Legacy

The use of punched cards declined with the development of electronic computers and magnetic storage devices. The last punched card machine was produced by IBM in the 1980s, and the use of punched cards is now largely obsolete. However, the legacy of punched cards can be seen in the development of computer programming languages, such as COBOL and FORTRAN, which were designed to work with punched cards. The use of punched cards also influenced the development of computer graphics, computer networks, and artificial intelligence. Punched cards were used by Alan Kay, who developed the Smalltalk programming language, and Douglas Engelbart, who developed the computer mouse. The legacy of punched cards can also be seen in the work of Tim Berners-Lee, who developed the World Wide Web, and Larry Wall, who developed the Perl programming language. Category:Computer hardware