HDD

A Hard Disk Drive (HDD) is a data storage device used in computers to save information permanently. It consists of spinning magnetic disks (platters) and read/write heads that move across the surfaces to store and retrieve data. Think of it like a digital filing cabinet: it keeps your files, programs, and operating system intact even when the computer is turned off. HDDs are commonly used due to their large storage capacity and cost-effectiveness, though they are slower than newer solid-state drives (SSDs). They are vital for storing all types of digital information reliably over time.