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A 12-row/80-column IBM punched card from the mid-twentieth century. 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 . Punched cards were widely used in the 20th century, where ...
Punched cards. A punched card is a flexible write-once medium that encodes data, most commonly 80 characters. Groups or "decks" of cards form programs and collections of data. The term is often used interchangeably with punch card, the difference being that an unused card is a "punch card," but once information had been encoded by punching ...
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. A computer card punch is a computer output device that punches holes in cards. Sometimes computer punch card readers were combined with ...
BCD. v. t. e. Extended Binary Coded Decimal Interchange Code [1] [2] ( EBCDIC; [1] / ˈɛbsɪdɪk /) is an eight- bit character encoding used mainly on IBM mainframe and IBM midrange computer operating systems. It descended from the code used with punched cards and the corresponding six-bit binary-coded decimal code used with most of IBM's ...
v. t. e. Child-selling is the practice of selling children, usually by parents, legal guardians, or subsequent custodians, including adoption agencies, orphanages and Mother and Baby Homes. Where the subsequent relationship with the child is essentially non-exploitative, it is usually the case that purpose of child-selling was to permit adoption .
Punched card. Wikimedia Commons has media related to Punch cards. This category contains articles about punched cards and card handling equipment, including card readers, card punches, and keypunches .
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. His invention of the punched card tabulating machine, patented in 1884, marks the beginning of ...
The Indonesian identity card ( Indonesian: Kartu Tanda Penduduk, abbr. KTP ), is a compulsory identity card for Indonesian citizens and residents with a valid resident permit. [ 1] The card is issued upon reaching the age of 17 or upon marriage. [ 1] For Indonesian citizens, the card is valid for life (previously it was only valid for 5 years ...