void main(void)
{
/* A7  A6  A5  A4  A3  A2  A1  A0 */
/*    1     1     1     1    1     1     0     0 */
LATA &= 0x0; TRISA &= 0xFC; /* configure port A of uC */
/* B7 B6 B5 B4 B3 B2 B1 B0  */
/*    1   1    1    1   1    1   1    1  */
LATB &= 0x0; TRISB &= 0xFF; /* configure port B of uC */
/* C7 C6 C5 C4 C3 C2 C1 C0 */
/*   0    0    1    1   1    1   0    0 */
LATC &= 0x0; TRISC &= 0x3C; /* configure porta C of uC */
InitializeSystem();
mLED_1_Off(); 
MSB_num_restart = ReadEEPROM(0x20);
LSB_num_restart = RedEEPROM(0x21);
if ((MSB_num_restart == 0xFF)&(LSB_num_restart == 0xFF)){  
/* blank eeprom */
MSB_num_restart = 0 ;
LSB_num_restart = 0 ; 
WriteEEPROM ( 0x20, 0);
WriteEEPROM ( 0x21, 0);
}
else
{ 
if (LSB_num_restart == 0xFF){ 
MSB_num_restart = MSB_num_restart +1;
WriteEEPROM ( 0x20, MSB_num_restart);
WriteEEPROM ( 0x21, 0);
LSB_num_restart = 0;
}
else
{ 
LSB_num_restart = LSB_num_restart +1;
WriteEEPROM ( 0x21, LSB_num_restart);
}
}
EnablePullups();     /* enable pull-up on PORTB */
while(1)
{
USBTasks();        /*  USB Tasks  */
ProcessIO();        /* See user\user.c & .h */
}
}
void ProcessIO(void)
{   
if((usb_device_state < CONFIGURED_STATE)||(UCONbits.SUSPND==1)) return;
if(getsUSBUSART(input_buffer,1)){
...
if(input_buffer[0] == '6') /* 0x36 */ {
if(mUSBUSARTIsTxTrfReady()){
mRele_1_On();                /* turn on relay number 1*/
putrsUSBUSART("I");    /* acknoledge */
}
}
...
}
}

Send 0 = 0x30 = 48 => Turn on Led and answer  "A"
Send 2 = 0x32 = 50 => Turn off Led and answer  "C"
Send 5 = 0x35 = 53 => if the puss button is pressed, answer  "G" 
otherwise "H"
Send 6 = 0x36 = 54 => Turn on Relay 1 and answer  "I"
Send 7 = 0x37 = 55 => Turn off Relay 1 and answer  "L"
Send 8 = 0x38 = 56 => Turn on Relay 2 and answer  "M"
Send 9 = 0x39 = 57 => Turn off Relay 2 and answer  "N"
Send a = 0x61 = 97 => Turn on Relay 3 and answer  "O"
Send b = 0x62 = 98 => Turn off Relay 3 and answer  "P"
Send c = 0x63 = 99 => Turn on Relay 4 and answer  "Q"
Send d = 0x64 = 100 => Turn off Relay 4 and answer  "R"
Send e = 0x65 = 101 => if input 1 is on, answer  "S" otherwise "T"
Send f = 0x66 = 102 => if input 2 is on, answer  "U" otherwise "V"
Send g = 0x67 = 103 => if input 3 is on, answer  "W" otherwise "Y"
Send h = 0x68 = 104 => if input 4 is on, answer  "J" otherwise "K"
Send i = 0x69 = 105 => if input 5 is on, answer  "Z" otherwise "a"
Send l = 0x6C = 108 => if input 6 is on, answer  "b" otherwise "c"
Send m = 0x6D = 109 => if input 7 is on, answer  "d" otherwise "e"
Send n = 0x6E = 110 => if input 8 is on, answer  "f" otherwise "g"
Send o = 0x6F = 111 => Turn on Relay 5 and answer  "H"
Send p = 0x70 = 112 => Turn off Relay 5 and answer  "B"
Send q = 0x71 = 113 => Turn on Relay 6 and answer  "D"
Send r = 0x72 = 114 => Turn off Relay 6 and answer  "E"
Send s = 0x73 = 115 => Turn on Relay 7 and answer  "F"
Send t = 0x74 = 116 => Turn off Relay 7 and answer  "G"
Send u = 0x75 = 117 => Turn on Relay 8 and answer  "X"
Send v = 0x76 = 118 => Turn off Relay 8 and answer  "m"

Send w = 0x77 = 119 => Read the Most significant part of number of restart
Send z = 0x7A = 122 => Read the Least significant part of number of restart