Podcast
Questions and Answers
What is the primary purpose of a storage device?
What is the primary purpose of a storage device?
- To process data while the computer is on
- To enhance the computer's performance
- To hold data when the computer is turned off (correct)
- To convert data into software applications
What material is often used to coat magnetic storage devices?
What material is often used to coat magnetic storage devices?
- Ferromagnetic material (correct)
- Plastic
- Silicon
- Aluminum
How are bits stored on magnetic storage devices?
How are bits stored on magnetic storage devices?
- By freezing the material
- By drilling holes into the device
- By magnetizing areas of a substance (correct)
- By burning the surface material
What are tracks on a magnetic disk?
What are tracks on a magnetic disk?
How are data sectors organized on a magnetic disk?
How are data sectors organized on a magnetic disk?
What must happen before a magnetic disk can be used for data storage?
What must happen before a magnetic disk can be used for data storage?
What is represented by the direction of magnetization on a magnetic storage medium?
What is represented by the direction of magnetization on a magnetic storage medium?
What are floppy disks known for?
What are floppy disks known for?
What is a bit in the context of magnetic storage devices?
What is a bit in the context of magnetic storage devices?
What occurs when data is read from a magnetic disk?
What occurs when data is read from a magnetic disk?
Flashcards
Storage Device
Storage Device
A device used to hold data, even when the computer is turned off.
Magnetic Storage
Magnetic Storage
Storage that uses magnetization of a material to represent data.
Bit
Bit
The smallest unit of data in a computer, represented as either 0 or 1.
Ferromagnetic Material
Ferromagnetic Material
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Track
Track
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Sector
Sector
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Floppy Disk
Floppy Disk
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Data storage on magnetic disks
Data storage on magnetic disks
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Formatting a disk
Formatting a disk
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Magnetizing disk surface
Magnetizing disk surface
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Study Notes
Categorizing Storage Devices
- Storage devices hold data, transferring it between computers.
- Reading and recording data can be done in several ways.
- Different technologies are used for storage, including CDs, DVDs, and hard drives.
Magnetic Storage Devices
- Magnetic storage uses materials that can be magnetized/demagnetized to store data.
- Hard drives use magnetic platters, and read/write heads, storing data magnetically.
- Data is organized in tracks and sectors.
How Data Is Stored on a Disk
- Magnets can be used to store data.
- To read data from magnetic media, the head passes over the surface, sensing the changes in polarity.
How Data Is Organized on a Magnetic Disk
- Before a computer can use a magnetic disk, it's formatted.
- Data is organized into tracks and sectors to facilitate retrieval and storage.
Tracks and Sectors
- A hard drive's surface is divided into tracks & sectors.
- Tracks are concentric circles.
- Sectors are segments within tracks.
- These are used to access specific data from the disk.
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