Introduction - If you have any usage issues, please Google them yourself
Delay is a compilation of procedures, suitable for beginners to use, when the high output port P1.0, P1.0 = 1 that is, when the one-way light-emitting diodes based on conductivity, we can see that this light-emitting diodes L1 extinguished when P1. 0 port output low, that is, P1.0 = 0, the light-emitting diodes L1-liang we can use the command SETB P1.0 port P1.0 output high to enable the use of instructions to enable CLR P1.0 output port P1.0 low.