· Liquid Crystal Displays (LCDs)

cheap and easy way to display text

Various configurations (1 line by 20 X char upto 8 lines X 80 ).

Integrated controller

The display has two register

By RS you can select register

Data lines (DB7-DB0) used to transfer data and commands

LCD Commands

The LCD’s internal controller can accept several commands and modify the display accordingly. These commands would be things like:

Clear screen
Return home
Decrement/Increment cursor
After writing to the LCD, it takes some time for it to complete its internal operations. During this time, it will not accept any new commands or data.
We need to insert time delay between any two commands or data sent to LCD