实物接线：

#include "stm32f10x.h"                  // Device header
#include "delay.h"
#include "LED.h"
#include "Key.h"
#include "Buzzer.h"
#include "Oled.h"int main(void)
{OLED_Init();
OLED_ShowChar(1, 1 , 'A');
OLED_ShowString(1,3, "Hello World!");
OLED_ShowNum(2,1,12345,5);
OLED_ShowSignedNum(2,7,-66, 3);
OLED_ShowHexNum(3,1, 0xffee, 4);
OLED_ShowBinNum(4, 1, 0xffee,16);while(1){}
}