本实验是DSP中键盘断响应，读键值并将键值显示到LED灯上。本实验采用中断键盘和I/O键盘，当有键按下时给DSP一个中断信号，DSP通过此I/O读键值，在读取键值后由LED亮灭显示出来。-DSP in this experiment is off to respond to the keyboard, reading keys and display to the LED lights on the key. The present study, interruption of the keyboard and I/O keyboard, when a key is pressed to the DSP when an interrupt signal, DSP through this I/O read keys, the keys to read after the eradication of LED light display.