SCM experiment C source code external interruption, two experiments: 1, outside interrupt count two digital tube display 2 and external interruption counter.
说明：51单片机外中断实验C源码，两个实验：1、外中断计数2位数码管显示；2、外中断计数器。
SCM smart locks, I have to do an experiment, and they hope to learn useful to everyone.
单片机控制的智能密码锁，我自己做的一个实验，希望对大家学习有用。
The ISP function of P89C61 SCM is utilized to design and make this SCM teaching experimental device compatible with 80c51 series daily experiment course at low cost.
利用P 89c61单片机的IS P功能，设计制作低成本单片机教学实验装置，兼容80c51系列日常实验内容。
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