The Bar Code Revolution
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Questions and Answers

Which technology is especially useful in supermarkets?

  • Cash registers
  • Scanners
  • Bar codes (correct)
  • Grocery stores

    • What is a bar code?

  • A printed pattern of black and white lines (correct)
  • A type of cash register
  • A type of scanner
  • A computer memory

    • Why were bar codes invented?

  • To add up the cost of purchases
  • To help customers wait in long lines
  • To help grocery stores speed up the checkout process (correct)
  • To search the store computer's memory

    • What does a scanner do with a bar code?

    <p>Reads the bar code</p> Signup and view all the answers

    What does a supermarket computer system have in its memory?

    <p>The bar code and price of each item</p> Signup and view all the answers

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