1. a PIC18F has 8 LEDs connected to Port A and 8 switches connected to Port B, write a C

program for the following task : The code will continually read the value of the switches, if the

value is zero it turn off all LEDs. If the value is between 0 and 5, turn on/off the first half of the

LEDs 5 times then switch them off. If the value is larger than 5 turn on/off all LEDs 10 times

then keep them on.

Hints: the PIC will switch on/off the LEDs very fast so you need a delay. You can use the

PIC18F predefine function __delay_ms(100); to introduce 100ms delay.

2. Write a C code that read 5 values (no value higher than 20) from port A (there is 8 switches

connected to Port A ) and store them in an array. When user finish input each value, he/she push

a button connected to pin 0 in port B. Once all the 5 values are stored in the array, an LED

connected to pin 7 in Port B will turn on. The PIC18F then computes the average if the average

is less or equal to 10 then toggle both LEDs connected to Port B pin 3 and pin 4 with low

frequency (they should switch on/off slowly). If the average is higher than 10 then toggle both

LEDs connected to Port B pin 3 and pin 4 with high frequency (they should switch on/off fast)