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A punched card (also punch card [1] or punched-card [2]) is a piece of card stock that stores digital data using punched holes. Punched cards were once common in data processing and the control of automated machines .
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. A computer card punch is a computer output device that punches holes in cards. Sometimes computer punch card readers were combined with computer card punches and ...
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Marketing managers are often responsible for influencing the level, timing, and composition of customer demand. In part, this is because the role of a marketing manager (or sometimes called managing marketer in small- and medium-sized enterprises) can vary significantly based on a business's size, corporate culture, and industry context. For ...
A punched card from the mid-twentieth century. Herman Hollerith then at the U.S. Census Bureau devised a tabulating system that included cards (Hollerith card, later Punched card), a punch for holes in them representing data, a tabulator and a sorter. [3] The system was tested in computing mortality statistics for the city of Baltimore. [3]
A market requirements document (MRD) in project management and systems engineering, is a document that expresses the customer's wants and needs for the product or service. [1] [2] It is typically written as a part of product marketing or product management. The document should explain: What (new) product is being discussed; Who the target ...
A lace card from the early 1970s. A lace card (also called a whoopee card, ventilator card, flyswatter card, or IBM doily [citation needed]) is a punched card with all holes punched. They were mainly used as practical jokes to cause disruption in card readers. Card readers tended to jam when a lace card was inserted, as the resulting card had ...