Circuit has $4$ binary inputs $($w$,$ x$,$ y$,$ z$).$

$$ Circuit has $5$ binary outputs $($B$4,$ B$3,$ B$2,$ B$1,$ B$0)$

$$ The output $($B$4,$ B$3,$ B$2,$ B$1,$ B$0)$ of the circuit is BCD equivalent of the input $($w$,$ x$,$

y$,$ z$).$

$7-$Segment display indicates the BCD number as two digit decimal number.

Digit$-1$ Digit$-0$

Figure $1.2-$Digit Decimal Display

$$ Last $4-$digits of BCD output must be connected to Digit$-0$s inputs respectively $($B$0$

$->$A$,$ B$1->$B$,$ B$2->$C$,$ B$3->$D$).$

$$ First digit of BCD output must be connected to Digit$-1$s input A and all other

inputs of Digit$-1$ must be logic$-0($B$->0,$ C$->0,$ and D$->0).$