Information Carrier

Information Carrier


(data carrier), in data-processing machinery, an object or substance used to record and accumulate data for the purpose of feeding it directly to a computer. The information carrier is an intermediate element between the machine and the primary documents, which contain numerical data, text, charts, graphs, and so on. The reading of information from information carriers and its conversion into the electrical signals required for computer work are relatively simple.

Information carriers are distinguished in terms of physical structure (magnetic, semiconductor, or dielectric), type of material (paper, plastic, metal, or combination), form of data representation (printed, manuscript, magnetic, or punched), principle of data reading (mechanical, optical, magnetic, or electrical), and construction (tape, disk, or card). The information is recorded on the information carrier by changing the physical, chemical, or mechanical properties of the storage medium. Examples of commonly used information carriers are punched cards, punched tape, and magnetic tape. The main shortcomings of punched cards and tape are the limited information recording density (up to 102 bits per sq cm) and poor mechanical strength. Magnetic tapes have much greater information density (up to 105 bits per sq cm) and can be used repeatedly (rerecording on the same tape segments).


Saveta, N. N. Ustroistva vvoda i vyvoda informatsii universal’nykh elektronnykh tsifrovykh vychisliteVnykh mashin. Moscow, 1971.
Anisimov, B. V., and K. S. Khomiakov. Ustroistva podgotovki dannykh dlia elektronnykh vychislitel’nykh mashin. Moscow, 1972.


References in periodicals archive ?
To Gilder, this means that gold further qualifies as a Shannon-esque information carrier, in that were gold money, vagaries of consumer taste and desire would decreasingly affect the medium that expresses such vagaries, namely the unit of account of the prices of in-demand goods and services.
Thus, the DM/QR code applied to the part turned it into an information carrier, controlling its progress through the process chain automatically.
a) The principle of equal treatment of library materials in the Copyright Act so that the lending of information should be enacted on an equal footing regardless of the information carrier (a problem with videos and e-books)
Long-term survival should be a goal of any information carrier.
Using this type of analog information carrier effectively provides for data compression and for increasing the operational speed of the system in this way.
Mobile operators are the information carrier and platform manager along with ensuring cash point rollout and connectivity.
The first is the encoder, which receives information and encodes for transfer into the information carrier - the SecureDecal, possibly also storing it in a database.
Information Source Substance and Information Carrier Substance
Chalmers says that there is increased interest in using the optical carrier phase as an information carrier.
Army Institute of Surgical Research in San Antonio, Texas, were honored for their Electronic Information Carrier and Chitosan Hemostatic Dressing, respectively.
The second most important element was the colour as an information carrier on the packaging.
The combination of paper as an information carrier with RFID technology enables new and more efficient methods of automatic identification and data acquisition.

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