LCD (Liquid Crystal Display) are widely used display modules we find in a wide range of applications. A 16x2 character LCD display is mostly used in many applications since it is easily and cheaply available. It can display 16 characters per line and we have 2 such lines. Pin Diagram: VCC is connected to supply voltage of 5V (4.7V to 5.3V) Contrast / VEE is used to adjust the contrast of the display. A variable resistor can be used to adjust the contrast of the display by connecting the wiper pin of the variable resistor to this pin and fixed pins to the supply voltage and Ground. RS (Register Select) A 16x2 LCD has two registers, a command register, and a data register. When it is pulled LOW command register is selected and when it is HIGH data register is selected. The command register will have all the instructions given to the LCD like clearing the screen, position of the cursor, initializing the LCD etc. The data register stores all the data we want t...