FUNDAMENTALS OF COMPUTER

Detailed explanation-1: -A modern HDD records data by magnetizing a thin film of ferromagnetic material on both sides of a disk. Sequential changes in the direction of magnetization represent binary data bits. The data is read from the disk by detecting the transitions in magnetization.

Detailed explanation-2: -The hard drive contains a spinning platter with a thin magnetic coating. A “head” moves over the platter, writing 0’s and 1’s as tiny areas of magnetic North or South on the platter. To read the data back, the head goes to the same spot, notices the North and South spots flying by, and so deduces the stored 0’s and 1’s.

Detailed explanation-3: -A hard disk drive (HDD), hard disk, hard drive, or fixed disk[b] is an electromechanical data storage device that uses magnetic storage to store and retrieve digital information using one or more rigid rapidly rotating disks (platters) coated with magnetic material.

Detailed explanation-4: -A 5, 400 RPM hard drive has a maximum read/write speed of around 75 megabytes per second (MB/s).

Detailed explanation-5: -RPM measures how many revolutions a computer’s hard drive platter makes in a single minute. The higher the RPM, the faster the data will be accessed. For example, comparing two hard drives, one with 5400 RPM and another with 7200 RPM, the 7200 RPM hard drive can access data much faster than the other.