中文摘要：

利用可编程逻辑器件GAL20V8B和双向总线驱动器SN74LVTH16245等集成电路实现TMS320LF2407对18位10．4in真彩液晶屏和触摸屏的控制，用于实现全数字电源的人机交互功能。利用用于电源控制的主控DSP配合液晶屏和触摸屏实现数字电源的人机交互系统，一方面具有改变人机交互内容时无需改变硬件电路结构的优势，增强了全数字化电源的操作性和灵活性；另一方面充分挖掘进行电源控制DSP处理器的能力，在一定程度上降低数字化电源的成本。

英文摘要：

The human-machine interaction system for digital power constructed by TMS320LF2407 which controls 10.4 inch 18-bits TFT true color LCD module and touch screen by using programmable logic device（GAL20V8B）, tri-state bus transceiver（SN74LVTH16245）,and other integrated circuits. The human-machine described above on the one hand has the advantage of changing the contents of interaction without needing to change the structure of the circuit. It would furthermore improve the convenience of operation of the digital power. On the other hand, the system will fully develop the ability of DSP in digital power control system,and it could lower the cost of digital power.