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LCD screen is an digital show module and find a variety of applications. A 16x2 LCD show may be very primary module and could be very generally utilized in varied devices and circuits. These modules are preferred over seven section and different multi phase LED's. The reasons being: LCDs are economical; simply programmable; have no limitation of displaying particular & even customized character (not like in seven segments), animation and so on. A 16x2 LCD means it might probably display 16 characters per line and there are 2 such traces. On this LCD each character is displayed in 5x7 pixel matrix. This LCD has two registers, namely, Command and Data. The command register stores the command instructions given to the LCD. A command is an instruction given to LCD to do a predefined job like initializing it, clearing its display, setting the cursor position, controlling display and many others. The data register shops the data to be displayed on the LCD. The data is the ASCII worth of the character to be displayed on the LCD. Click on to study more about inside construction of a LCD. LCD stands for liquid crystal show. They arrive in many sizes 8x1 , 8x2 ,10x2, 16x1 , 16x2 , 16x4 , 20x2 , 20x4 ,24x2 , 30x2 , 32x2 , 40x2 and so forth . Many multinational firms like Philips Hitachi Panasonic make their own special kind of lcd's for use of their merchandise. Now prepared to put in writing code to Display on LCD. Flip on your Raspberry Pi and Open the terminal window.