PIC16F877A

Design Exercise 2: Counting Up and Down Exercise details: Set PORTB as input; counter depends on the value of RB0-RB6 but will only have 99 as maximum value When RB7 is High, circuit must perform count up When RB7 is Low, circuit must perform count down Set PORTC and PORTD as output There will be four 7-segments to be used; two for the counter and two for the flag The flag will count the number of times that the counter either up or down was able to detect 15