16x2 LCD MODUL

LCD module 16x2 is a display which is used for showing a character given by the system, in this case a information paint system is microcontroller. To communicate with a microcontroller based on the length of the data, the LCD has two interface methods, namely interface 4 bit and 8-bit interface

8 bits interface methods, data written or read by a microcontroller to/from the LCD is done once process. As for the 4-bit interface methods, writing or reading is done twice for 8 bit data. 4 bit LCD interface is set to write mode data, by connecting the foot of R/W to GND. with 4 bit method, the use of I/O ports on the miktokontroller can be reduced so that the port can be used to process other i/o

In this circuit, there is a trimpot (trimmer potentiometer)10KO. The function of the trimpot used to set the contrast of characters displayed on the LCD