Exercise 3: Convert the following decimal numbers to unsigned binary numbers. a) 42 b) 63 c) 229 d) 845 Exercise 4: Convert the following decimal numbers to 8-bit two's complement numbers, or indicate if that decimal number would overflow the range (i.e. if 8-bit is insufficient to represent the signed number). a) 42 b) -63 c) 124 d) -127 e) 133