Introduction - If you have any usage issues, please Google them yourself
knowledge points : understanding the logic familiar with the MCU running Operational Results : P1 output four times the numerical calculation, To eliminate the attention of an 0-for from 1.7 to 1.0 and with the concept : all 0 0 1 1. or concept : have a whole for a 0 0. from the concept of anti-encountered a case of 0 0 or for a different concept : the same as for a different 0