The LCD consists of Data, Command and control registers. The data will pass towards the molecules and will be there until they are changed. The data, we can see, will be the part where the light gets absorbed. So this deflection of light will make the human eye see the light of the remaining part which will make the dark part as a value and digits on the grid pixels. To show the value, molecules need to change their position to change the angle of light. Each pixel uses the light-absorbing method to show the digit. The molecules are responsible for showing the data on each pixel. The modules vibrate and align their position at 90 degrees, which allows the polarized sheet to pass the light through it. The basic principle in LCD is by the passing of light from one layer (sheet) to another layer with the use of modules. The two sheets are also placed between these sheets. The liquid crystals are placed between the two glass sheets on the screen. The Data and command registers are only able to store the operation of basic light control. The Data registers help to store the data and then pass it to the controller. The command registers store the data of different functions that can be performed on the screen. In the LCD the registers are used to store the data and commands. Pin15 is for the power input of the LED.ġ6×2 Liquid Crystal Display Constructions The LCD comes in multiple colors and every time in different LCD the color will depend on the internal LED. In some cases, alone usage of the least 4-pins can make the device functional. It act as permission to internal registers.ĭ0-D1 is the first 4 bits input pins of the 8-bit input data to the LCD.ĭ4-D7 pins use to give the input of least 4-bit of the data. The signal on Pin5 will decide whether it is going to read from LCD or write on it.Įnable pin will help to transfer the instruction from the data pins and another command pin to the LCD. It helps to toggle the command/data register. This pin is known as a register select pin. It will help to control the contrast of PIXELS according to the 16X2 LCD light. Pin 3 will connect with power and ground through 3 pin potentiometers. The power pin will use for voltage input to the 16X2 LCD. 16×2 LCD Pin Configuration and Working of Each Pin Power Pins PINS
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