PART $1$:

Use PORTB and $7-$segment display to show the numbers $0$ through $9.$ The shown number should be incremented every $1$ second using a delay generated using TIMERI.

Use if statements to decode the numbers, example:

If $($counter $==0)$

PORTB $=03F$;$0b00111111-$ number $0$

else if $($counter $==1)$

PORTB $=006$;$0b00000110-$ number $1$

PART $2$:

In the circuit used in PARTl, use an interrupt instead of the timer to increment the number. The number should be incremented anytime the push button is pressed, You can specify any event type. Use INTI pin as a source of interrupt.