The text provides a practical electric circuit, it can realize switch between ISP state and normal operation state for P89C51RD2.
本文提供一种实用电路，使得8位单片机P89C51RD2方便地实现ISP状态与正常运行状态的切换。
A case analysis indicated that changes of normal operation state of the HEN would not impact the bypasses location, which was derived from the above method.
分析稳态工作点变化后的情况，表明工况变化不影响上述得出的旁路设置。
A case analysis indicated that changes of normal operation state of the HEN would not impact the bypasses location, which was derived from the above method.
分析稳态工作点变化后的情况，表明工况变化不影响上述得出的旁路设置。
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