Introduction - If you have any usage issues, please Google them yourself
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