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magnetic recording
Also known as: magnetic head, recording head, tape head
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sound recording
- In sound recording: The audiotape
The recording head of the tape deck consists of a tiny C-shaped magnet with its gap adjacent to the moving tape. The incoming sound wave, having been converted by a microphone into an electrical signal, produces a time-varying magnetic field in the gap of the magnet. As…
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use in computer memory
- In computer memory: Magnetic disk drives
…disks, or platters, with an electromagnetic read/write head for each surface; the entire assembly is called a comb. A microprocessor in the drive controls the motion of the heads and also contains RAM to store data for transfer to and from the disks. The heads move across the disk surface…
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