#include <Keypad.h>
#include <SevenSeg.h> 
SevenSeg disp (13,12,11,10,9,8,A0);
const int numOfDigits= 1;
int digitPins [numOfDigits]={A1};
const uint8_t ROWS = 4;
const uint8_t COLS = 4;
char keys[ROWS][COLS] = {
 {'1', '2', '3', 'A' },
 {'4', '5', '6', 'B' },
 {'7', '8', '9', 'C' },
 {'*', '0', '#', 'D' }
};
void loop() {
  lcd.setCursor(0,0);
  for (int thisChar = 0; thisChar < 10; thisChar++) {
    lcd.print(thisChar);
    delay(200);
  }
  lcd.setCursor(16,1);
  lcd.autoscroll(); 
  for(int thisChar = 0; thisChar < 10; thisChar++) {
    lcd.print(thisChar);
    delay(200);
  }
  const uint8_t ROWS = 4;
const uint8_t COLS = 4;
char keys[ROWS][COLS]={
  {'1','2','3','A'},
  {'4','5','6','B'},
  {'7','8','9','C'},
  {'*','0','#','D'}
};
uint8_t colPins[COLS]= {3, 2, A2, A3 };
uint8_t rowPins[ROWS]= {7, 6, 5, 4 };
Keypad keypad = Keypad(makeKeymap(keys), rowPins, colPins, ROWS, COLS);

void setup() {
Serial.begin(9600);
disp.setDigitPins (numOfDigits, digitPins );
disp.setCommonCathode();
disp.setDutyCycle(50);
}
void loop() {
char key = keypad.getKey();
int num =key-48;
int num2;
if(key != NO_KEY){
Serial.println(key);
disp.write(num);
num2=num;
}
disp.write(num2);
}