SDT集成开发环境下的 基于S3C44B0的DMA控制源代码，源于Samsung提供的源代码，分开后便于学习-SDT integrated development environment based on the S3C44B0 DMA control source code from Samsung to provide the source code, the separation easy learning

基于S3C44B0的USB测试试验程序源代码，在SDT集成开发环境开发的，修改自Samsung提供的源代码，分开后更便于学习-S3C44B0 USB-based tests source code, the SDT integrated development environment developed by Samsung changes since the source code, the separation easier to learn

电脑倒计时，有数码管显示，用串口控制，分离的子程序，容易看懂-Computer countdown, a digital display, with a serial control, separation of the subroutine, easy to understand

基于ST公司官方USB库分离完成的在stm32f407上USB协议中的VCP功能-Based on STM32f407 official completion of the separation of VCP USB library functions on stm32f407 USB protocol