条形码扫描程序，应用飞思卡尔单片机处理数据，摄像头扫描 -Bar code scanner, data processing applications Freescale microcontroller, the camera scans

基于AT89S52单片机的彩屏汉字显示，可以在彩屏上显示汉字-Can display Chinese characters on a color screen color screen display of Chinese characters based on AT89S52 Microcontroller

At this stage the microcontroller clock setting is already configured, this is done through SystemInit() function which is called startup file (startup_stm32f4xx.s) before to branch to application main. To reconfigure the default setting of