edge-notched cards

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• Edge-notched card — used as a library card. Edges not notched here. A notched card …   Wikipedia

• Index card — An index card is heavy paper stock cut to a standard size. Index cards are often used for recording individual items of information that can then be easily rearranged and filed. The most common size in the United States and Russia is 3 in by 5 in …   Wikipedia

• Barcode — For the taxonomic method, see DNA barcoding. A UPC A barcode symbol A barcode is an optical machine readable representation of data, which shows data about the object to which it attaches. Originally barcodes represented data by varying the… …   Wikipedia

• Punched card — Overpunch redirects here. For the code, see Signed overpunch. A punched card, punch card, IBM card, or Hollerith card is a piece of stiff paper that contains digital information represented by the presence or absence of holes in predefined… …   Wikipedia

• Zatocoding — Système de sélection inventé par en 1952 par Calvin Mooers, fondateur de la Zator Company en recherche documentaire fondé sur un sélecteur automatique de fiches préperforées, les Zatocards , et utilisé entre 1952 et 1978[1]. Alliage des codes et… …   Wikipédia en Français

• Punched tape — Five hole and eight hole punched paper tape Punched tape or paper tape is an obsolete form of data storage, consisting of a long strip of paper in which holes are punched to store data. It was widely used during much of the twentieth century for… …   Wikipedia

• Optical mark recognition — (also called Optical Mark Reading and OMR) is the process of capturing human marked data from document forms such as surveys and tests. Contents 1 OMR background 2 OMR software 2.1 Open Source …   Wikipedia

• Computer data storage — 1 GB of SDRAM mounted in a personal computer. An example of primary storage …   Wikipedia

• Data storage device — Many different consumer electronic devices can store data …   Wikipedia

• bridge — bridge1 bridgeable, adj. bridgeless, adj. bridgelike, adj. /brij/, n., v., bridged, bridging, adj. n. 1. a structure spanning and providing passage over a river, chasm, road, or the like. 2. a connecting, transitional, or intermediate route or… …   Universalium

• Key punch — A key punch is a device for entering data into punched cards by precisely punching holes at locations designated by the keys struck by the operator. Early keypunches were manual devices. Later keypunches were mechanized, often resembled a small… …   Wikipedia