Keypunch & Punched card - Unionpedia, the concept map

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Difference between Keypunch and Punched card

Keypunch vs. Punched card

A keypunch is a device for precisely punching holes into stiff paper cards at specific locations as determined by keys struck by a human operator. A punched card (also punch card or punched-card) is a piece of card stock that stores digital data using punched holes.

Chad (paper)

Chad refers to fragments sometimes created when holes are made in a paper, card or similar synthetic materials, such as computer punched tape or punched cards.

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Character encoding

Character encoding is the process of assigning numbers to graphical characters, especially the written characters of human language, allowing them to be stored, transmitted, and transformed using digital computers.

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Computer programming in the punched card era

From the invention of computer programming languages up to the mid-1970s, most computer programmers created, edited and stored their programs line by line on punch cards.

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Computer terminal

A computer terminal is an electronic or electromechanical hardware device that can be used for entering data into, and transcribing data from, a computer or a computing system.

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Data (computer science)

In computer science, data (treated as singular, plural, or as a mass noun) is any sequence of one or more symbols; datum is a single symbol of data.

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Data processing

Data processing is the collection and manipulation of digital data to produce meaningful information.

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EBCDIC

Extended Binary Coded Decimal Interchange Code (EBCDIC) is an eight-bit character encoding used mainly on IBM mainframe and IBM midrange computer operating systems.

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Herman Hollerith

Herman Hollerith (February 29, 1860 – November 17, 1929) was an American statistician, inventor, and businessman who developed an electromechanical tabulating machine for punched cards to assist in summarizing information and, later, in accounting.

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IBM

International Business Machines Corporation (using the trademark IBM), nicknamed Big Blue, is an American multinational technology company headquartered in Armonk, New York and present in over 175 countries.

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IBM System/3

The IBM System/3 was an IBM midrange computer introduced in 1969, and marketed until 1985.

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Mohawk Data Sciences

Mohawk Data Sciences Corporation (MDS) was an early computer hardware company, started by former Univac engineers in 1964; by 1985 they were struggling to sell off part of their company.

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Pantograph

A pantograph (from their original use for copying writing) is a mechanical linkage connected in a manner based on parallelograms so that the movement of one pen, in tracing an image, produces identical movements in a second pen.

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Powers Accounting Machine

The Powers Accounting Machine was an information processing device developed in the early 20th century for the U.S. Census Bureau.

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Punched card input/output

A computer punched card reader or just computer card reader is a computer input device used to read computer programs in either source or executable form and data from punched cards.

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Punched tape

Five- and eight-hole wide punched paper tape Paper tape reader on the Harwell computer with a small piece of five-hole tape connected in a circle – creating a physical program loop Punched tape or perforated paper tape is a form of data storage device that consists of a long strip of paper through which small holes are punched.

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Remington Rand

Remington Rand, Inc. was an early American business machine manufacturer, originally a typewriter manufacturer and in a later incarnation the manufacturer of the UNIVAC line of mainframe computers.

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Unit record equipment

Starting at the end of the nineteenth century, well before the advent of electronic computers, data processing was performed using electromechanical machines collectively referred to as unit record equipment, electric accounting machines (EAM) or tabulating machines.

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UNITYPER

The UNITYPER was an input device for the UNIVAC I computer manufactured by Remington Rand, which went on sale in mid-1951 but was not in operation until June 1952.

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