DescriptionThis display module with keys is made of premium material, which can withstand long-lasting use. Features the LED and PCB material, which has high durability, not easy to deform. Fine workmanship, ensures practicality. This display module with keys will make the repair and upgrade easier and smoother.Features-Color:Blue -Material:LED, PCB -Size: 7.50X5.00X1.30cm;/2.95X1.97X0.51in; - Comes with internal integrated microcontroller digital interface, data latch, LED high voltage drive and keyboard scanning circuit. - The chip used in this module is TM1638, which integrates the common peripheral circuits of the above three microcontrollers. - The biggest feature is that it only needs to occupy three IO ports of the microcontroller, no need microcontroller for scan display and detection keys, saving MCU resources. - Exquisite workmanship, reasonable structure, professional and practical, can bring you convenience. - It is simple in design, but very practical in use, which brings great convenience to you.