Analysis of the principle of power switching circuit:
1 input power is 12V power adapter
2-way input power supply is 12V lithium battery
Requirements: The power adapter is the main power source, and t
I encountered a strange problem. Within a few seconds after the SD card is unplugged, all functions that operate the SD card will be blocked. During this period, the buttons on the touch screen will a
I have KEIL MDK5 in my computer, but not KEIL C51, so I have to install one. My old method is this: if KEIL MDK5 is installed in the C: drive, then I install KEIL C51 in the D: drive. This solves the
As a simple digital communication method, I2C only needs two data lines to complete the communication between the host (Master) and the slave (Slave) at a short distance, saving MCU pins and additiona