1. What happened before printing presses were invented?
=> Before printing presses were invented , only rich people like kings and dukes could afford to buy books.
2. Why were books wanted before printing presses were in vented?
=> They wanted books because they were expensive and there was something magical about them
3. What is common feature of a book and a computer?
=> They were very large and expensive.
4. what situation has thoroughly changed nowadays?
=> Lots of people not only own microcomputer but also know how to use them.