Introduction This Project just for improve the coding skills. Microchip: GD32F47x OLED: SCL - PB8 SDA - PB9 LED: LED1 - PD1 LED2 - PD3 LED3 - PD5 LED4 - PD7 LED5 - PB4 LED6 - PB6 Independent Keypad: KEY1 - PE15 KEY2 - PE13 KEY3 - PE11 KEY4 - PE9 KEY5 - PE7 KEY6 - PB0