Q$5.$ Using Logisim application, design and draw a combinational digital circuit using only $2-$input gates that compare two $4-$bit binary numbers and outputs a $1$ when the numbers are equal and a $0$ when they are not using a $4-$iniput gate.$$

$1)$ For each bit pair, Ai$$ and Bi$,$ where i ranges from $0$ to $3,$ feed them into a gate where the gate outputs $0$ when both$$ bits are equal, and $1$ when they are different.$$

$2)$ Next, combine the outputs of the $4$ gates above using a $4-$input gate. The gate will output a $1$ only if all inputs are $0($which means all bit pairs are equal$),$ and $0$ if any input is $1($which means at least one bit pair is different$).$