TM1638 8-Bit LED Digit Tube Display Module 16 Keys Keyboard

TM1638 8-Bit LED Digit Tube Display Module

For the wiring connect VCC GND to a 5V supply and connect STB CLK DIO to the microcontroller IO ports. Scanning display and key scan don’t need microcontroller intervention, only need to register to display data related to reading and writing or testing buttons, save MCU resources.