0 votes 0 votes 01001101 A +11101001 B ----------------- 100110110 C Both A and B are in 2's compliment form My doubt is in C what sign bit is it 8th position(0) or 9th position (1)? mehul vaidya asked Oct 14, 2018 mehul vaidya 239 views answer comment Share Follow See all 2 Comments See all 2 2 Comments reply mehul vaidya commented Oct 14, 2018 reply Follow Share in this case i know it is positive hence 8th position , is this same for all such addition 0 votes 0 votes Shubhanshu commented Oct 14, 2018 reply Follow Share Resultant bit pattern will not contain bit no 9. And the 8th bit is sign bit. Above in decimal 77-23 = 54. 0 votes 0 votes Please log in or register to add a comment.