How big is a PetaByte ?

• Bytes(8 bits)

  • 0.1 bytes: A binary decision
  • 1 byte: A single character
  • 10 bytes: A single word
  • 100 bytes: A telegram OR A punched card

• Kilobyte (1000 bytes)

  • 1 Kilobyte: A very short story
  • 2 Kilobytes: A Typewritten page
  • 10 Kilobytes: An encyclopaedic page OR A deck of punched cards
  • 50 Kilobytes: A compressed document image page
  • 100 Kilobytes: A low-resolution photograph
  • 200 Kilobytes: A box of punched cards
  • 500 Kilobytes: A very heavy box of punched cards

• Megabyte (1 000 000 bytes)

  • 1 Megabyte: A small novel OR A 3.5 inch floppy disk
  • 2 Megabytes: A high resolution photograph
  • 5 Megabytes: The complete works of Shakespeare OR 30 seconds of TV-quality video
  • 10 Megabytes: A minute of high-fidelity sound OR A digital chest X-ray
  • 20 Megabytes: A box of floppy disks
  • 50 Megabytes: A digital mammogram
  • 100 Megabytes: 1 meter of shelved books OR A two-volume encyclopaedic book
  • 200 Megabytes: A reel of 9-track tape OR An IBM 3480 cartridge tape
  • 500 Megabytes: A CD-ROM OR The hard disk of a PC