DMA控制器可以无需CPU介入而在内部存储器、外部存储器和芯片外设之间传送数据，其在DSP系统中有广泛的应用价值。

The DMA controller can transmit data among the interior memorizer, exterior memorizer and chip peripheral without the CPU intervention. It has comprehensive application value in the DSP system.

youdao

用VB写的一个串口文件传送系统，实现了串口之间文件传送的例子。很有参考价值。

Using VB to write a serial file transfer system for file transfer between a serial port example. Useful reference value.

youdao

用VB写的一个串口文件传送系统，实现了串口之间文件传送的例子。很有参考价值。

Using VB to write a serial file transfer system for file transfer between a serial port example. Useful reference value.

youdao