Hard Drive Technology

What is the main component of a hard drive?

• High-speed spinning discs

• Recording head

• Magnetic reader

• Electromagnet

How is data recorded on a hard drive?

• As electrical current

• As magnetic patterns

• As microscopic metal grains

• As groups of bits

What is the purpose of the magnetic reader in a hard drive?

• To convert bits into electrical current

• To change the direction of magnetization

• To translate data into a useful form

• To increase the areal density

How is information represented in a hard drive?

• As zeroes and ones

• As electrical current

• As microscopic metal grains

• As magnetic patterns

What is the areal density of a modern hard drive?

• 600 megabits per square inch

• 300 million bits per square inch

• 600 gigabits per square inch

• 300 million gigabits per square inch

How was the superparamagnetic effect resolved?

• By changing the direction of recording

• By increasing the areal density

• By using heat assisted magnetic recording

• By arranging bit locations in nano-sized structures

What is the size of a modern hard drive?

• The size of a local library

• The size of an airplane

• The size of the palm of your hand

• The size of the Earth

What is the primary function of the read/write head in a hard drive?

• To store data

• To read and write data on the disk

• To spin the disk

• To cool the hard drive

What is the function of the recording head in a hard drive?

• To read and write data on the spinning discs

• To spin the discs at high speed

• To provide power to the hard drive

• To connect the hard drive to the computer