BLK204A-BK-WB

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BLK204A-BK-WB, a common display module, is a part of the LCD, OLED character and numeric products. It is mainly used for displaying digital numbers in electronic equipment, and is widely used in computer systems and LED digital displays due to its simple structure, convenient installation and maintenance. The module consists of a display window, a power supply and supporting logic gates. Its power supply provides 1.8V to 3.3V voltage output, which can drive a 4 Arduino IO port. The size of the display module is 2.2 inches, with 16 characters and 4 lines of characters. It has a built-in Liquid Crystal Driver (LCD) and OLED backlight circuit for displaying the characters, icons and numbers that the user requires. The module is easy to use, thereby making it much easier for users to operate. First, the user needs to connect the power supply. Then, the user needs to set and write the parameters with a control chip, such as Arduino, which would then generate and output internal control signal to the module display window. Moreover, the module also has a contrast control pin which can control the display contrast. As a result, there is no need to connect external power supply or external LCD contrast control circuit. The working principle of the module is quite simple. Electricity would reach the Control Chip and then it would generate a control signal to the module. This signal is then received by the Liquid Crystal Driver, which controls the Liquid Crystal Display Window to display the user\'s selected design. The OLED backlight circuit would need to provide the Liquid Crystal Display Window with a source of light to be visible. In conclusion, BLK204A-BK-WB has a simple structure, convenient installation and maintenance, which makes it a great choice for users who want digital displays. With the help of the Control Chip, users can easily display their desired information on the module, thus eliminating the need for external power supply or LCD contrast control circuit altogether.

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