Introduction - If you have any usage issues, please Google them yourself
KEIL under the SST89E58 Singlechip calendar (timer) procedures, including the general calendar, time, also with a stopwatch, Lunar (1901-2100), the use of four buttons (one button for the function/set switch button Second, for a downward adjustment for the increase of the three buttons, four buttons for the state to restore key), which contains the keys to expedite the processing of variable length keys, etc.! 1602LCD used as a display, hardware connection can be defined by reference to the first file!