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能耗已经成为微处理器设计的最大挑战之一。微处理器的能耗在便携设备中占有重要的比例。DVS（Dynamic Voltage Scaling）机制可以在设备运行过程中，通过降低处理器的工作电压来降低它的能耗。同时，还需降低处理器的速度。电压调度程序通过分析应用的约束和需求来给定适当的工作电压。文章论述了速度和输入电压可变的微处理器系统设计方法。在处理器低速工作时，降低工作电压可以大幅度降低它的能耗。这将使应用系统能快速地根据负荷的变化调节处理器的性能。
Power consumption has become one of the biggest challenges in microprocessor design. Microprocessor power consumption in portable devices occupy an important proportion. The DVS (Dynamic Voltage Scaling) mechanism can reduce the energy consumption of a processor by reducing the operating voltage of the processor while the device is operating. At the same time, you also need to slow down the processor. The voltage scheduler gives the appropriate operating voltage by analyzing the constraints and requirements of the application. The paper discusses the design method of microprocessor system with variable speed and input voltage. When the processor is operating at low speed, lowering the operating voltage can drastically reduce its power consumption. This will enable the application to quickly adjust processor performance based on load changes.