Write with interruption program can realize, minutes and seconds, and when and points can add 1.
用中断程序写，能实现时、分、秒，并且时和分都能加1。
This article describes the principle of realizing interruption for PIC16C5X serial MCU and points out the key of technological process and the way of application.
叙述了PIC16C5X系列单片机实现中断的原理，指出了技术关键所在，并给出了应用方法。
It points out the difficulties in the renovation of the power supply system and the risks of the transitional scheme under the condition of operation without interruption.
指出地铁在不停运的条件下，供电系统改造的难点和过渡方案存在的风险性；
It points out the difficulties in the renovation of the power supply system and the risks of the transitional scheme under the condition of operation without interruption.
指出地铁在不停运的条件下，供电系统改造的难点和过渡方案存在的风险性；
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