TM1638 Digital 8Bit LED Tube 8 Keys Display Module for AVR Arduino ARM

product description Features: 8 8-bit 8-digit LED digital tube, a total of cathode LED digital tube. Using the TM1638 chip, the module captures three or more common SCM peripheral circuits. Its advantage is that only three IO ports are occupied while driving. Supply chain management does not need to work for display and critical scanning. Only need to read the relevant registers to send display data or test button, you can effectively save MCU resources. The keys are sensitive and effectively display. specification: Weight: 28g Material: glass fiber reinforced plastic, PBT shell, PA blade How to connect: VCC GND 5V power supply, STB CLK DIO SCM IO port. Package Included: 1 * 8-bit LED TM1638 display module