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power-off-protection
- 自学实现两位数码管计时器的断电保护。利用I2C总线通过AT24C02SC芯片实现断电保护,即断电后再开启,能显示上次的数据内容。-Self-realization of the two power protection in the digital control timer. I2C bus through AT24C02SC chip power protection, power failure after the open, to display the content of the l