After an introduction of the importance and necessity of introducing IBIS model into the design of mobile computer system

and the application of IBIS model in the system clock design for mobile computer

the authors have elaborated the principle and the waveform of signal of clock simulation.Simulation experiments show that IBIS model plays an important role in the system clock design and error prevention

and that the model shortens the period of computer system design and improve the rate of success rate of computer system design.