4. Define Hard, Soft and Firm Real Time system. Discuss whether or not the following are hard, soft or firm real-time systems. (a) A police database that provides information on stolen automobiles. (b) The computer system controlling the Panama Canal locks. (c) An automatic teller machine. (d) Anti-lock Brake system 5. For the systems mentioned in Problem 3, discuss reasonable response times. 6. For the systems mentioned in Problem 3, discuss which are embedded, loosely 93 coupled or organic. (Do Google search for definition for "organic system"). 7. Can you describe a computer system that is completely non-real-time (that is, in which there are no bounds whatsoever on the response time)