Please help, we bought a batch of 17+ year products. After testing, QC said that the pins were seriously leaking copper and could not be used, so we asked for a return. The supplier said that this was
[Ask if you don't understand] Use the 89C52 single-chip computer to make an LED light flashing effect, turning on for one second and off for one second. Now I'm stuck on assigning initial values to ti
In recent years, with the emergence of intelligent products and increasingly fierce competition, many terminal product manufacturers have higher and higher requirements for the indicators of their own