47
a) b)
Figure 4.3 : a) RB7 LED turn on shows error when RB1 pressed more than 0.5
second b) RB7 LED turn on shows error when RB0 and RB1 pressed more than 0.5
second
If the counter count to zero, RB6 is turn off.
Figure 4.4 : RB6 turn off when counter equal zero
