// Use of Global variables.

void setup() {
  // put your setup code here, to run once:
Serial.begin(9600);  
byte x = 0b10000101;
Serial.println(x,BIN);
for(int j = 0; j < 4; j++){
   Serial.print(bitRead(x,j));
  }
}
void loop() {
  // put your main code here, to run repeatedly:

}