Today, easy-to-use visual displays are used to track the performance of any device. Such a visual display can be anything from the old analog meters to the new ones and the elegant digital meters. In the digital world to track devices, LCD are very commonly used. LCD screens are easy to program and turn out to be a better display unit compared to other devices like seven segments and LED display units.
LCD graphic displays are preferred to character LCDs for those applications where characters and graphics are required. This article will explain the basics of a 128x64 graphics LCD and how you can interconnect with AT89C52 to show basic shapes.