Test 2

Question 1

What are storage devices?

Answer 1

anything that can hold data (e.g. photos, PDFs, movies, word processing documents, spreadsheets, etc.)

Question 2

What is a hard drive?

Answer 2

• an internal or external computer component that stores data

Question 3

What is a hard drive interface? Which is currently used?

Answer 3

-defines the physical and logical means by which the hard drive connects to the PC
-SATA (Serial ATA) Uses a narrow cable to deliver data serially, 1 bit at a time

Question 4

How do magnetic hard drives work? *

Answer 4

-Have multiple hard metal surfaces called platters
-Each platter typically holds data on both sides and has two read/write heads, one for the top and one for the bottom
-Read/write heads float on a cushion of air without touching the platter surface
-Data is written by using electromagnetism
-A charge is applied to the read/write head creating a magnetic field