4. A friend knows you are taking a technology class in college and asks you how a hard drive works. In your own words, describe how a hard drive works.
Read-write arm swings read-write head back and forth across platter. Central spindle allows platter to rotate at high speed. Magnetic platter stores information in binary form. Plug connections link hard drive to circuit board in personal computer. Read-write head is a tiny magnet on the end of the read-write arm. Circuit board on underside controls the flow of data to and from the platter. Flexible connector carries data from circuit board to read-write head and platter. Small spindle allows read-write arm to swing across platter I
