5 weiser w , welch b , demers a , shenker s . scheduling for reduced cpu energy . in proc . the 1st usenix symposium on operating systems design and implementation , monterey , ca , november 1994 , pp . 13 - 23 與半導(dǎo)體技術(shù)的發(fā)展速度相比電池技術(shù)發(fā)展慢的多,未來(lái)的移動(dòng)設(shè)備必須在有限能源供應(yīng)下發(fā)揮更大的效能,這對(duì)系統(tǒng)功耗提出了很高的要求。