Week 5

   We had the first term test on Wednesday. I felt ok about this test but I still have to pay more effort on it.I have studied computer science for almost a month so far. At the beginning it is a little bit difficult for me to use Dr.Racket to do some orders like how to define a function using design recipe. I felt better after practicing more and learn some basic ideas like Boolean logic and binary system. Specifically,  I have to study how to multipy the binary representations of 15 and 19. After the class I know that we can turn 15 to 1111 and turn 19 to 10011.We can multiple 1111 * 10011 to get the result.
                                    
      I hope that I can have more improvement  about compuer by having this class.