ARDUINO NANO(MEGA328P) DISCRIPTION

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                       input output control using  button.

          

const int  button_a =2; //define button 1 //
const int button_b =3; //define button 2 //

const int led_A= 12;//define led 1//
const int led_B =13;//define led 2//

int button_State =0;
int  button_State1=0;
void setup() {
  pinMode(button_a,INPUT);
  pinMode(button_b,INPUT);
  pinMode(led_A,OUTPUT);
  pinMode(led_B,OUTPUT);
}

void loop() {
  button_State=digitalRead(button_a);
  if(button_State==HIGH)
  {
   digitalWrite (led_A,LOW);
  }
   else{
       digitalWrite( led_A,HIGH);
   }
    button_State1=digitalRead(button_b);
  if(  button_State1==HIGH)
  {
   digitalWrite( led_B,HIGH);
  }
  else{
       digitalWrite( led_B,LOW);
  }


}