/*
  Arduino_3key_6led
 
  This example code is in the public domain.
 */
 
// Define key pin
int Ka = 11;
int Kb = 12;
int Kc = 13;
// Define led pin
int GND = 6;
int D1 = 5;
int D2 = 4;
int D3 = 3;
int D4 = 2;
int D5 = 1;
int D6 = 0;

// variables will change:
int buttonState = 0;         // variable for reading the pushbutton status

// the setup routine runs once when you press reset:
void setup() {               
 // initialize the keys pin as an input.
 
  pinMode(Ka, INPUT);
  pinMode(Kb, INPUT);
  pinMode(Kc, INPUT);
 
 // initialize the leds pin as an output. 
pinMode(GND, OUTPUT); 
pinMode(D1, OUTPUT);  
pinMode(D2, OUTPUT);
pinMode(D3, OUTPUT); 
pinMode(D4, OUTPUT); 
pinMode(D5, OUTPUT); 
pinMode(D6, OUTPUT); 

//Activate key pin internal pull-up resistors
digitalWrite(Ka, HIGH);
digitalWrite(Kb, HIGH);
digitalWrite(Kc, HIGH);

//as LED GND
digitalWrite(GND, LOW); 
}

// the loop routine runs over and over again forever:
void loop() {
 
 
  buttonState = digitalRead(Ka);
  digitalWrite(D1, buttonState);   //
 
  buttonState = digitalRead(Kb);
  digitalWrite(D2, buttonState);   //
 
  buttonState = digitalRead(Kc);
  digitalWrite(D3, buttonState);   //
 
  digitalWrite(D4, HIGH);   // turn the LED on (HIGH is the voltage level)
  digitalWrite(D5, HIGH);   // turn the LED on (HIGH is the voltage level)
  digitalWrite(D6, HIGH);   // turn the LED on (HIGH is the voltage level)
 
 
}