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Some of the devices mentioned above can perform both the input and output functions. Magnetic disc, magnetic diskette, and magnetic tape are examples of such devices. Discs the Magnetic, diskettes, tapes and record the data as with CAN output from the primary stor¬age and CAN Also the serve as with the input the devices directory returning the data to the primary storage.
The Data are recorded occurs on magnetic discs and magnetic tapes ei¬ther by the outputting the data from the primary storage or by using a data recorder. Data recorders are not input devices, and they are not connected to the computer system. Instead they are offline recorders. Magnetic recording media of The devices directory are key-to-disk, key-to-diskette, and key-to-tape machines.
The Key-to-disk devices directory are USED as with the data recording stations in multistation the shared-processor Systems. Able to are for They correct the data the before Storing IT on a magnetic disk and the before its' entry Into the main computer system.
The Key-to-diskette Systems store the data on flexible discs, diskettes Called. Are inexpensive and Diskettes reusable.
The Key-to-tape devices directory CAN record the data on reels, on cassettes, and on tape cartridges. The magnetic tape reels produced by key- to-tape systems are in a computer-compatible format for subsequent direct data input into a computer. However, data on cartridges and cassettes often are transferred to higher-speed media, such as a full-sized reel of magnetic tape or magnetic disc, for data transfer to the computer.
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