精选优质文档-倾情为你奉上计算机体系结构课后习题1.1 Three enhancements with the following speedups are proposed for a new architecture :Speedup1=30Speedup2=20Speedup3=15Only one enhancement is usable at a time.（1） If enhancements 1 and 2 are each usable for 25% of the time ,what fraction of the time must enhancement 3 be used to achieve an overall speedup of 10?（2）Assume the enhancements can be used 25%,35% and 10% of the time for enhancements 1,2,and 3,respectively .For what fraction of the reduc
