实现数据掉电保护，数据存入单片机自带的EEPROM
程序实现P0口,P1口分别驱动LED灯(低电平亮)把两个8位变量count.dat,temp.dat
显示出来,这两个个八位约1s自增一次，且变量的值能够掉电保护(To achieve data power down protection, data stored in the microcontroller comes with EEPROM
Procedures to achieve P0 port, P1 port, respectively, drive LED lights (low level bright), the two 8 variable count.dat, temp.dat
Show, two of these eight, about 1s from the increase once, and the value of variables can be power-off protection)