1.2.2 Secondary Storage

Question 1

magnetic storage

Answer 1

tape/hard disk

Question 2

tape/hard disk

Answer 2

• uses a different pattern pf magnetisation material to store data
• magnetised point on a pattern = 1
• demagnetised points on a pattern = 0

Question 3

solid state/flash storage

Answer 3

flash drive

Question 4

flash drive

Answer 4

• send large electric current to force electrons through a barrier and trapping them in position
• different arrangements of electrons gives us data

Question 5

optical storage

Answer 5

CD/DVD

Question 6

CD/DVD

Answer 6

• consists of marks arranged in patterns
• laser burns pits into the shiny surface (land) as optical media is written
• when reading optical media a light is shined on its surface
• when it hits land the beam reflects (0)
• when it hits the pits it doesn’t (1)