Number representation $(20$ points$).$ To compute the decimal operation $"11-15"$ in a digital system, please perform the following four steps: Find the $6-$bit $2\text{'}$s complement representation for the decimal number $+11.$ Find the $6-$bit $2\text{'}$s complement representation for the decimal number $-15.$ Compute $11-15,$ using $6-$bit $2\text{'}$s complement format, and highlight your result. Identify whether an overflow occurs in step $3$f in $1$ f in terms of A and B for the following circuit. In the red boxes, specify the four inputs of the multiplexer using $0,1,$w$\_(3),$ or $()/($bar$)($w$)\_(3),$ so that the following circuit implements the majority function f$=$w$\_(1)($w$\_(2))/($b$)$ar $($w$\_(3))$