Peoples love to interface to a design that mainly related with LCD display, but the only problem is LCDs require both many I/O lines (at least 7) and also need some precise timing or command structure which seen hardly to achieve.

The best way to get rid all the matters is to develop a “front end” to the LCD. By this apply this method to the LCD, it will accept serial data and acquire only one line from the mcu (You need almost no programming effort to display some text with this method).

For this project, you will use the HD44780A LCD controller, as most text displaying LCDs are based on this system. The HD44780A is connects with the host mcu through an 8 bit bi-directional interface (D0-D7) and the other three control lines (E, RS and R/W). Read more »