LCD modules are very commonly utilized in most embedded projects, the rationale being its cheap price, availability and programmer friendly.
Most folks would have encounter these displays in our day to day life, either at PCO’s or calculators.
The appearance and therefore the pinouts have already been visualized above now allow us to get a touch technical.
A 16x4 LCD (Liquid Crystal Display) means it can display 16 characters per line and there are 4 such lines.
This is a popular 16x4 LCD with Blue Backlight.
It is based on the SPLC780 or S6A0069 display controller which makes it is easy to interface this display with most microcontrollers in a wide range of applications.
Its extreme popularity ensures that regardless of which micro controller platform you're using, you'll definitely find ready libraries to use this LCD.
It works on 5v and features a blue backlight which may be switched on and off as desired.
The contrast of the screen can also be controlled by varying the voltage at the contrast control pin (pin 15).
16×4 LCD is known as so because; it's 16 Columns and 2 couple of Rows. There are tons of combinations available like, 8×1, 8×2, 10×2, 16×1, etc. but the foremost used one is that the 16×4 LCD.
So, it'll have (16×4=64) 64 characters in total and every character are going to be made from 5×8 Pixel Dots.
We know that every character has (5×8=40) 40 Pixels and for 64 Characters we'll have (64×40) 2560 Pixels. Further, the LCD should even be instructed about the Position of the Pixels.
Hence it'll be a busy task to handle everything with the assistance of MCU, hence an Interface IC like HD44780is used, which is mounted on the backside of the LCD Module itself.
The function of this IC is to urge the Commands and Data from the MCU and process them to display meaningful information onto our LCD Screen.
Product Includes:-1x 1604 Display 16*4 (BLUE)