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对于一个实时系统,无论是市场购置的,还是自行设计的,在实际应用中,都必须虑及一些重要的技术问题。实时系统对外界输入激励源的响应以及所形成的输出信号如附图所示。在此必须虑及的三个技术要点是:性能、准时性及容错性。性能实时系统的软、硬件构成将直接影响到系统的性能。
For a real-time system, whether it is purchased in the market or designed by oneself, some important technical problems must be considered in practical applications. The response of the real-time system to the external input excitation source and the formed output signal are shown in the attached drawings. Three technical points to be considered here are: performance, punctuality and fault tolerance. Performance Real-time system software and hardware composition will directly affect the performance of the system.