1. Invisible backup battery Your phone is running low on power. To keep it working, press *3370# and the phone will restart. After the restart is complete, you will find that the power has increased b
I recently had to disassemble a digital microscope. I had received it for a long time but I didn't disassemble it because I encountered a little trouble. At first, I received a 20-megapixel digital di
The program is not big, and the circuit diagram is not complicated. It is just a dynamic display of a digital tube. I used interrupts to make a table. As a result, when the MCU clock was set to 11.059