I found that some circuits are designed to turn on the light when the voltage is low. This way, an extra 74ABT04D is used. Does the anti-interference performance of the circuit designed to turn on the...
I want to receive a character "a" when using the serial port, and send "A" three times. The for statement doesn't work, but it works fine using a for(;;) infinite loop. If I change it to for(i=3;i>0;i...
This paper introduces a design of an adjustable three-phase to single-phase variable frequency power supply based on single-chip digital control. The system makes full use of modern power electronics ...
I have a question. If I don't use XT2, should I ground the crystal pin? Output or input? Directly or through a capacitor? Please give me some advice......
I bought a TFT like this on Taobao and used ARM2148 to drive it. I don't know why the screen can only display half of the background color and then it gets stuck and nothing can come out. See the prog...