Use the input capture to control the digital clock.  In this part, there will be two switches to control the clock, one is for starting the clock and one is for stopping the clock.  When the start button is pushed, it will reset the clock (set to Clock to 00:00) and enable the timer to start counting.  On the other hand, when the stop button is pushed, it will disable the timer (stop the clock).  It will be convenient to use the pushbutton switches on the FOX11 board to do this. One of the switches is already on PORTA and so can be used with the input capture feature.  Your instructor will display you how to wire a PORTC switch over to PORTA for the second switch