// check if no. of overflows = 12
if (tot_overflow >= 12) // NOTE: ‘>=’ is used
{
// check if the timer count reaches 53
if (TCNT0 >= 53)
{
PORTC ^= (1 << 0); // toggles the led
TCNT0 = 0; // reset counter
tot_overflow = 0; // reset overflow counter
}
}