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Moore was once one of the founders of Intel 's forecast : Performance 18 computers will double every month , history proves this prediction . An important measure of performance is the computer processor chip clock frequency, as illustrated in Figure trends Intel processor clock frequency : about every two clock frequency can be doubled. Moore reflects trends in the semiconductor industry in 2001 on the future of the semiconductor industry association made a chip clock frequency planning [ International Technology Roadmap for Semiconductors (ITRS)], according to the plan , with the processor clock frequency is growing, necessarily implies data transfer rate on the system bus speed is growing. In addition, other products such as high-speed communications products, data rates and clock frequency will accelerate improved. Therefore , more and more electronic systems designers will engage more than 100 MHz frequency circuit design . Currently , more than half of the clock frequency of the digital system is above 100MHz. When the system clock frequency exceeding 50 MHz, integrity issues and signal transmission line effects will occur ; and when the system clock frequency of 120 MHz, PCB design based on traditional methods will not work , you must use the high-speed circuit design knowledge . Thus , high-speed circuit design has become a modern electronic system designers must master knowledge. Only the high-speed circuit design techniques to design controllable process .

Figure Intel processor clock frequency trends