Question

Question 4 8 pts Using 1's complement math perform the following math. All numbers are in 1's complement form. Answers MUST be in 8 bits and groups of 4 bits. Y= 0110 00012 X 1000 10002 X+Y Overflow (Yes/ No) YX Overflow (Yes/ No) Overflow (Yes /No) X-Y= Overflow (Yes/ No) Y-X

Answer 1

from the question: X - 1000 1000 Sign which indicates number is In this sign - 1 negative. Y = 0110 0001 A sign this signao which positive! In is indicates the number X &Y ir add x and y. 1000 1000 Negative 0110000) posetive io 1001 -> Negative (sign-1),

number gives addition of negative result u. No positive and negative is possible, overflow. cig ytX : Add y and x. onoord 0110 ooo, as positive on 1000 10000 Negative Tio 10o Negative C sign=1). negative number gives positive and is possible. Addition of negative result (1) x To get – need to do is complement

is complement of ollo oool is 10011110 (change o to, and too) X-4: 1000 1000 carry + 1001 1110 > Negative Doolo ollo 7 - 1000 1000 > carry negative Now ada i Carry 0010 our positive . l signo) of getting negative, Negative & Negative = Negative. our result is positive instead yes, overflow exist al carry... civ) Y - X!- To get -x perform is complement. is complement of 1000 1000 is 0111 0111 4-x: ono ooo positive Olli Ol11 positive 1101 1000 - Negative. Ci signe 1.) positive tpositive a positive. negative instead of getting positive. (Yes, Overflow occur] result our