DPMS：显示器电源管理信号可降低耗电在不使用。
DPMS: Display power management signaling for reduced power consumption during non-use.
重点分析了几个关键驱动程序的实现和移植，包括了串口、LCD显示器及电源管理。
Several key focus of the driver and the realization of transplantation, including the serial port, LCD display and power management.
重点分析了几个关键驱动程序的实现和移植，包括了串口、LCD显示器及电源管理。
Several key focus of the driver and the realization of transplantation, including the serial port, LCD display and power management.
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