LCD Keypad Shield

http://dx.com/p/lcd-keypad-shield-for-arduino-duemilanove-lcd-1602-118059

http://www.nuelectronics.com/download/projects/LCDshield_v1_1.pdf

http://arduino.cc/en/Tutorial/LiquidCrystal


 * 1) include 

// initialize the library with the numbers of the interface pins LiquidCrystal lcd(8, 9, 4, 5, 6, 7);

void setup { // set up the LCD's number of columns and rows: lcd.begin(16, 2); // Print a message to the LCD. lcd.print("hello, world!"); }

void loop { // set the cursor to column 0, line 1 // (note: line 1 is the second row, since counting begins with 0): lcd.setCursor(0, 1); // print the number of seconds since reset: lcd.print(millis/1000); }