Arduino Blue LCD1602 16x2 LCD with Keypad Shield

1602 LCD is also known as 1602 character LCD, a specially designed dot matrix LCD module which is used for displaying letters, numbers and symbols etc. It consists of several 5X7 or 5X11 other dot matrix character bits,each dot matrix character bit can display a character, the interval between each bit measures a dot pitch, the interval also exists between each line, all above have a character spacing and row spacing effect. This item is based on HD44780 LCD chip and adopts standard 16-pin interface.

Specifications:

1. LCD Keypad Shield input-output expansion board using a two-line 16 character LCD.
2. This board is with contrast adjustment and backlight.
3. Using an analog input port will complete five buttons, a reset button, unused IO ports are extended out of the reserve,make full use of IO ports. 
4. Occupancy figures port: PIN4 (DB4), 5 (DB5), 6 (DB6), 7 (DB7), 8 (RS), 9 (E), 10 (backlight control), an analog buttonport A0. Used in conjunction with Arduino

LCD DataSheet here