The following are the same as the “
Information download address: http://box.cloud.taobao.com/s/KvE9sND1E
Including the following resources:
3,8 digital tube
The module used by the chip TM1638, a collection of three common microcontroller peripheral peripheral circuit, the biggest feature is only need to take up the three IO can drive the microcontroller, scan display and key scan does not require microcontroller intervention, only need to read and write the relevant register to send display Data or detection keys to save MCU resources. Purchase the module to provide an example program.
Imagine, we usually use the microcontroller 8 external LED, 8 digital tube, 8 keys which need to take up the number of IO port, far more than three IO port, but with this module can be achieved. By the practical application, the key sensitive display is good.
VCC GND 5V power supply, STB CLK DIO connected to the microcontroller IO port.
1. Keypad LED display module 1 block