disk drive is a device that performs the basic operation on a disk, including r
otating the disk and
reading and writing data onto it.
19. The hard disk is the primary storage unit of the computer. It consists of a stack of disk platters
that are made up of aluminium alloy or glass substrate coated with a magnetic material and pro-
tective layers. It plays a significant role in: performance, storage capacity, software support, and
reliability.
20. Zip disk is a removable storage device having a capacity to store 250-700 MB of data. Zip disk’s
drive unit is measured as 18 ⫻ 13 ⫻ 4 cm and weighs about ...
Become an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month, and much more.