magnetic disk
Học thuậtThân thiện
Definition
Noun: 1. A data storage device: A flat, circular plate made of metal or plastic, coated with a magnetizable material, used for storing digital information in computers and other electronic devices. Information is stored by magnetizing tiny areas of the coating in different patterns, which can later be read back.
Usage and Examples
- As a general storage medium: The term refers to the physical hardware component.
- The computer's operating system is installed on the magnetic disk.
- Early personal computers used floppy magnetic disks for data transfer.
- In technical contexts: Often used to distinguish this technology from other storage types.
- Data is accessed on a magnetic disk by a read/write head that moves across the spinning surface.
- Compared to solid-state drives, magnetic disks typically have slower access times but higher storage capacity for the cost.
Advanced Usage
- "Fixed magnetic disk": Another term for a hard disk drive (HDD) that is permanently installed inside a computer.
- "Removable magnetic disk": Refers to storage media like floppy disks or Zip disks that can be ejected from the drive.
Variants and Related Words
- Disk (or Disc): A common shortened form.
- Hard Disk / Hard Drive: A specific, high-capacity type of magnetic disk with rigid platters, sealed in a unit.
- Floppy Disk: A specific, portable type of magnetic disk with a flexible plastic substrate.
- Disk Drive: The hardware device that contains and operates the magnetic disk (e.g., reads from and writes to it).
Synonyms
- Storage disk
- Magnetic storage medium
Related Terms (Not Synonyms)
- Solid-State Drive (SSD): A modern storage device with no moving parts that uses flash memory, not magnetic technology.
- Optical Disc: A storage medium like a CD or DVD that uses lasers to read and write data, not magnetism.
Noun
- (computer science) a memory device consisting of a flat disk covered with a magnetic coating on which information is stored