该文件实现对24C02的操作。 确认试验是否成功：电源上电后，数码管的值在递增，观察值。关闭电源，待几秒后上数码管显示的值会从断电钱的那个值开始显示。-The file operation to achieve the 24C02. Confirmatory test is successful: power-up, the digital value in the increment, observations. Turn the power off, wait a few seconds