magnetic head
Học thuậtThân thiện
Definition
Noun: A magnetic head is a small electromagnetic component, typically found in devices like tape recorders, disk drives, and video recorders. Its primary function is to convert electrical signals into varying magnetic fields to record (write) data onto a magnetic storage surface, and conversely, to convert the magnetic variations stored on that surface back into electrical signals for playback (read).
Usage
The term is used to describe the specific hardware component responsible for the reading and writing processes in magnetic storage media. * The magnetic head in the cassette deck needs cleaning. * A damaged magnetic head can cause data loss on the hard drive. * The engineer aligned the magnetic head for optimal recording quality.
Advanced Usage
- Read/Write Head: This is a more specific term for a magnetic head that performs both functions. In some advanced systems, separate heads are used for reading and writing.
- Flying Head: In modern hard disk drives, the magnetic head "flies" on a microscopic cushion of air nanometers above the spinning platter's surface.
Variants and Related Words
- Head (noun): A common shortened form in technical contexts (e.g., "a dirty tape head").
- Read Head (noun): A head specialized for reading data.
- Write Head (noun): A head specialized for writing data.
- Tape Head (noun): A magnetic head specifically designed for use with magnetic tape.
Synonyms
- Transducer (in the specific context of converting signal forms)
- Read/write element
Related Phrases
- Head Crash (noun): A serious malfunction where the magnetic head makes physical contact with the storage platter, often causing data destruction.
- Head Alignment (noun): The precise adjustment of the magnetic head's position relative to the storage medium.
Noun
- an electromagnet (as on a tape recorder) that converts electrical variations into magnetic variations that can be stored on a surface and later retrieved