$2.$Build the interface on PORTB: RB$3-$RB$7$available as X$10$Pins $1-8$and PORTA:

RA$0-$RA$2$as X$8$Pins $1-3$to drive $8$LEDs available as X$6$Pins $1-8$on the trainer

board.

$3.$Use remaining PORTB: RB$0,$RB$1,$RB$2$as inputs to implement choices of $3$

different lighting patterns that is selectable by $3$different DIP switches on S$7,$

the connection available as X$32$Pins $1-8$: $(1)$Blink $4$LEDs ON and $4$LEDs OFF

and interchange to $4$OFF and $4$ON$,(2)$Blink every other ON and every other

OFF and interchange, $(3)$Blink all $8$LEDs ON and OFF.

$4.$You must implement three different speeds: $(1)$implement time delay of $0\mathrm{.}9$

second for pattern $1,(2)$implement time delay of $0\mathrm{.}4$second for pattern $2,(3)$

implement time delay of $0\mathrm{.}25$second for pattern $3.$

$5.$The system must run the patterns and blinking $($different time delays$)$continuously

$($No GOTO $$).$