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The tape was a long, narrow strip of plastic coated with a +magnetic material. Data is recorded on the the tape by magnetising tiny +particles on its surface. It was first used in the 1920s for audio recording. + +Data is accessed in a linear, sequential manner. To reach a specific piece of +data, you often need to wind through all the preceding data + +It was used for long term storage rather than RAM memory due to its sequential +nature. It stored data and program instructions that would be read into the +machine's memory. Data was also written out to magenetic tape, in order to store +and further process results. + +It could store more data than punched cards and its sequential nature +accommodated batch processing well. However its sequential nature meant it was +slow at retreiving specific pieces of data as it would have to cycle through all +the values stored on the tape. + +![Magnetic tape stored as casette](../img/magnetic-tape-disk.jpeg) + +It developed from open-reel tapes to cartridges and cassettes. It was superseded +by hard disk drives and solid state drives.