Graduate School of Engineering and Systems Science, Tsinghua University, Taiwan and Semiconductor Processing and Integration Professional Course for Juniors and Seniors 2021 Edition https://ycwuess.wixsite.com/semiconductorlab
After writing the program into the MCU, the program does not run (the diode driven by port B does not light up); when I touch the crystal oscillator input pin of the MCU with my hand, the MCU can run.
LED fluorescent lamp power supply is very popular this year. Many companies design products that often have problems in the certification stage due to not understanding the specifications, and spend a
There is a USB detection. When the USB is detected, the red light in RGB will be displayed. When the key is pressed for the first time, it will light up white. There are five gears corresponding to fi
When I used the board wizard, I set the following rules to run two lines between two pads. However, after I finished the layout and routed, I found that my board components were a bit dense, and the t
As the title says, for example, for a two-layer PCB
After copper is applied to both the top GND and the bottom GND
Why do we need to place several vias on the GND copper between the two layers? (After