Microcontroller PIC16F877 Video 27 What is Character LCD

Character LCD

An LCD is an electronics display module that uses liquid crystal to produce a visible image. This component is specifically manufactured to be used with microcontrollers, which means that it cannot be activated by standard IC circuits. It can display all the letters of the alphabet, Greek letters, punctuation marks, mathematical symbols, etc. It is also possible to display symbols made up by the user.

Character LCD 16 x 2

The 16x2 LCD display is a very basic module commonly used in microcontroller projects. The 16x2 LCD screen can display two lines with 16 characters each line. Every character consists 5x7 or 5x10 dot matrix.

Feature Of 16x2 LCD Module

The operating voltage is 4.7V to 5.3V.
The current consumption is 1mA without a backlight.
Alphanumeric LCD display module, means can display alphabets and numbers.
Consists of two rows and each row can print 16 characters.
Can work on both 8-lines and 4-lines mode.
It can also display any custom-generated character.
Available in green, blue backlight.

LCD Contrast

Display contrast depends on the power supply voltage and whether messages are displayed in one or two lines. For this reason, varying voltage 0-Vdd is applied to the pin marked as Vee. A trimmer potentiometer is usually used for this purpose. Some of the LCD displays have a built-in backlights (blue or green LEDs). When used during operation, a current limiting resistor should be serially connected to one of the pins for the backlight power supply.

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