4.Computation (30 points) (1) (7) X=0.01010101,Y=0.10011101, what is X+Y= ? compute XYY using two sign bits, and check whether there is an overflow. (2) (8) For 8 bit (including the sign bit), X=56,Y=18, what is XY= ? computc XY using two sign bits, and check whether there is an overflow. (3) (10') X=1001,Y=1101, compute XY using sign magnitude. 10011101????? Si.m mrimitiodno SComputer Principles 8 Yinul-term Exam (4) (5')A program, being executed on a processor, has the following instructions mix: Compute the average clock cycles per instruction