Each Dot-matrix LCD Module contains a CMOS controller and all necessary drivers which have low power consumption. The controller is equipped with an internal character generator ROM, RAM and RAM for display data. All display functions are controllable by instructions making interfacing practical. Before you selecting a dot-matrix LCD module, you must make sure the basic information about what size and format is required to display the desired information. Generally speaking, dot-matrix LCD module has two formats including fully functional alphanumeric module and fully-populated graphic modules. Refer to specification of this LCD module, they are feature with Alpha-numeric modules display characters, numerals, symbols and some limited graphics. They are widely used in display RAM addressing, cursor scrolling, blanking and handshake. A graphic module is also used when different sized characters are needed. In summary, this module is the simplest and most economic way to communicate information between ant micro-system and the outside world.