1.1.3: input, output and storage

• Types of magnetic storage

  • Hard disk drive
  • Floppy disk
  • Magnetic tape
• Give three examples of input devices

  • keyboard
  • mouse
  • microphone
  • webcam
  • touchpad
  • barcode reader
  • magnetic stripe reader
• Give an example of a device which is used for both input and output

  Touchscreen
• What name is given to the areas on a CD’s surface which have been burned into grooves by a laser?

  Pits
• What does CD stand for?

  compact disc
• Give three examples of output devices

  • Speaker
  • Monitor
  • Printer
  • Projector
• Which has the highest typical storage capacity: CD, DVD or Blu-Ray? Blu-Ray
• In a hard disk drive, what is mounted at the end of the actuating arm?

  Read / write head
• Give two types of magnetic storage

  • Hard disk drive
  • Floppy disk
  • Magnetic tape
• Which storage device has typical capacities in the range 500GB-5TB?

  Hard disk drive
• Give two disadvantages of SSDs

  • High cost per GB
  • Limited lifespan
• What does ROM stand for?

  Read only memory
• Describe the structure in which information is stored in flash memory

  Information is stored in blocks, which are combined to form pages
• What is meant by non-volatile?

  A non-volatile storage medium does not lose its information when power is lost
• Which two types of logic gate are used in flash storage?

  NAND and NOR
• Give three advantages of SSDs

  • High transfer speeds
  • Lightweight
  • No moving parts
• Is ROM volatile or non-volatile?

  Non-volatile
• Which form of storage device uses silicon semiconductors to store information?

  Flash
• Give three disadvantages of CDs

  • They are easily damaged by scratches
  • They have relatively low capacities
  • They have relatively slow transfer speeds
  • They are easily damaged by scratches