what is hdd in laptop

A hard disk drive (HDD) is a type of data storage device that is used in laptops and desktops. It is an internal or external computer component that stores data, such as the operating system, applications, and user files. HDDs are “non-volatile” storage devices, meaning they retain stored data even when power isnt being supplied. An HDD includes two main elements; a spinning platter and an actuator arm. The platter spins on a spindle to help speed up the read/write process as the actuator arm moves across it. Instead of an HDD, newer computers are usually fitted with an SSD (solid-state drive) . SSDs are smaller and faster than HDDs, and they are noiseless and allow PCs to be thinner and more lightweight. SSDs are often used in laptops because theyre non-mechanical, require less power, and translate into better battery life.