#include <LiquidCrystal.h>
LiquidCrystal lcd(12,11,10,9,8,7);

byte hertz[8]={
  0b00000,
  0b01010,
  0b11111,
  0b11111,
  0b11111,
  0b01110,
  0b00100,
  0b00000
};

byte nehertz[8]={
  0b00000,
  0b01010,
  0b11111,
  0b11111,
  0b11111,
  0b01110,
  0b00100,
  0b00000
};

void setup() {
  // put your setup code here, to run once:
  lcd.begin(16,2);
  lcd.createChar(1,hertz);
  lcd.createChar(2,nehertz);
}

void loop() {
  // put your main code here, to run repeatedly:
  lcd.setCursor(0,0);
  lcd.write(1);
  lcd.write(2);
}