7 Segment 8-digit LED Display Drive Kit - Common Cathode
For the application TM1638 ic, this module is designed with the three common SCM peripheral circuits connecting the button, LED and LED display together on one board, and is driven by three I/O ports.
TM1368 ic is a Chinese make. It can replace the commonly used 74HC164 and 74HC595 without adding triode and resistor and can drive LED display directly.
* Operation voltage: 5VDC
* I/O interface: STB / CLK / DIO
Please refer the following link information on how to use this module