89C51/S51单片机上电复位后,SP的内容应为( )(A)00H(B)07H(C)80H(D)F

89C51/S51单片机上电复位后,SP的内容应为( )(A)00H(B)07H(C)80H(D)FFH

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19. (问答题) It doesn’t seem to make much difference

19. (问答题) It doesn’t seem to make much difference whether a person sleeps immedi

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