Question

10 line on hardisk. ​

Answer 1

Answer:

Hard disk, Magnetic storage medium for a microcomputer. Hard disks are flat, circular plates made of aluminum or glass and coated with a magnetic material. Hard disks for personal computers can store up to several gigabytes (billions of bytes) of information. Data are stored on their surfaces in concentric tracks. A small electromagnet, called a magnetic head, writes a binary digit (1 or 0) by magnetizing tiny spots on the spinning disk in different directions and reads digits by detecting the magnetization direction of the spots. A computer’s hard drive is a device consisting of several hard disks, read/write heads, a drive motor to spin the disks, and a small amount of circuitry, all sealed in a metal case to protect the disks from dust. In addition to referring to the disks themselves, the term hard disk is also used to refer to the whole hard drive.

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Answer 2

Answer:

Hard disk.

1. It can be defined as a rigid non-removable magnetic disk with a large data storage capacity.
2. The disk is made up of magnetic material and are sealed inside a case.
3. It is used to store lots of programs and data permanently.
4. It can store more information than a floppy disk. For eg- A hard disk can store anywhere from 10 to more than 100 Zettabytes.
5. The capacity of a hard drive is usually measured in gigabytes (GB), however hard disk capacity can also be measured in terabytes when the capacity is over 1000 gigabytes
6. A disk is divided into tracks, cylinders and sectors.
7. Track: A track is that portion of a disk which passes under a single stationary head during a disk rotation, a ring 1 bit wide
8. Cylinder: A cylinder is comprised of the set of tracks described by all the heads at a single seek position.
9. Sector: A track is divided into segments of sectors, which is the basic unit of storage.Data is stored in sectors within cylinders and is read by a head which passes over the spinning surface of each disk.
10. When there is more than one disk, each one is called a platter. There are 1 to 12 platters in a hard disk.

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