与电脑的配置有关系,仿真即是模拟,在程序运行的时候会占用大量的CPU,所以秒会慢,根据电脑的不同也会出现慢不同
The accuracy of the clock is dependent upon the accuracy of the crystal and the accuracy of the match between
the capacitive load of the oscillator circuit and the capa citive load for which the crystal was trimmed. Additional
error will be added by crystal frequency drift caused by tem perature shifts. External circuit noise coupled into the
oscillator circuit may result in the clock running fast.