Page 8 - Chapter 2-part 2
P. 8

Binary




     Please alert the
     base
                                                            Must become 8 bit
          60 + (-45 ) =
             10
                         10

          60 10       11 1100                                    0011 1100

                                     Just put                                                                     How to get 2 nd
          45 10       10 1101        number 0                    0010 1101                                        complement



                                               1St                                  2nd                           1101 0011
             45  10

          0010 1101                        1101 0010                            1101 0011                       +                1
                                                                                                                __________

                                                                                                                  1101 0011

          Disregarded         1                                                            Change to

                                    0011 1100                          0000 1111           Decimal will get
                                                                                           the amount
                                  + 1101 0011

                                  __________

                                    0000 1111       2                                          15






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