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Reading (computer)
Reading is an action performed by computers, to acquire data from a source and place it into their volatile memory for processing. For example, a computer may read information off a floppy disk and store it in random access memory to be placed on the hard drive to be processed at a future date. Computers may read information from a variety of sources, such as magnetic storage, the Internet, or audio and video input ports.
A read cycle is the act of reading one unit of information (e.g. a byte).
A read channel is an electrical circuit that transforms the physical magnetic flux changes into abstract bits. A read error occurs when the physical part of the process fails for some reason, such as dust or dirt entering the drive.
Reading can be abstracted to one of the main functions of a Turing machine.
== History ==
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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