1. Explain the following terms as used in computer science:
   (a) Data.
   (b) Program.
   (c) Data processing.
   (d) Information.
   3. List down four characteristics of a computer.
   4. State four different parts that make up a computer.
   5. (a) Explain the term System Unit.
   (b) Name four components found in the System unit.
   6. (a) What are peripheral devices?
   (b) Give two examples of peripheral devices.
   (1 mark)
   2 marks)
   (2 marks)
   (2 marks)
   (4 marks)
   (2 marks)
   (1 mark)
   (4 marks)
   (1 mark)
   (1 mark)
   (b) Computers have evolved through a number of generations. List any 4 characteristics of
   the First generation of computers.
   (4 marks)
   (c) Give four differences between today's computers and the first generation computers.
   (b) Briefly discuss the classification of computer according to historical development
   (generations)
   9. Explain four methods of classifying computers.
   (10 marks)
   (4 marks)
   10. Giving two points in each case, state the difference between the following types of
   computers.
   (a) Supercomputer and Mainframe computer.
   (2 marks)
   (b) Digital computer and Analogue computer.
   (2 marks)
   (c) Special-purpose (dedicated) computer and a General-purpose computer.
   (2 marks)
   (d) Desktop computers and Laptop computers.
   Teacher.co.ke
   11. (a) Explain the emerging trends in Microcomputer technology in relation to size. (1 ma