Q$1$

$3$ Points

Draw a full$-$subtractor using two half$-$subtractors, and one more simple gate only.

Hint: start by writing the $D$ and the $$ functions.

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Q$2$

$4$ Points

A sequential circuit with two clocked D$-$flip$-$flops A and B$,$ one input $x,$ and one output $z$ is

specified by the following input equations:

$D_A=B^{\text{'}}**x,D_B=A**x,z=A^{\text{'}}**B$

Q$2\mathrm{.}1$

$1$ Point

Draw the logic diagram of the circuit.

Please select file$($s$)$