题目内容
Interrupt service subroutine can be called directly.
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On the premise of interrupting, as long as the interrupt source sends an interrupt request, the CPU will respond to the interrupt immediately.
In the internal structure of MCS-51 single chip microcomputer, tmod is the mode control register, which is mainly used to control the start and stop of timer.
In the internal structure of MCS-51, TCON is the control register, which is mainly used to control the start and stop of timer.
The two timers of mcs-1 have two working modes, namely, timing and counting
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