What is wrong with keil4? The target is always not established. How to correct it?
Note: A new project has been created, a new file has been created (the file is named .c), and the source group has be
Pervasive and deep network connectivity forces engineers to confront and solve a variety of technical security and reliability issues. As more and more embedded devices work in an open network environ
Wi-Fi was mainly used in homes in the early days, but has gradually been applied to public places such as stadiums, restaurants, and hotels. Our lives are increasingly inseparable from Wi-Fi, and peop
Can experts help me analyze the specific working mode of this TL431?I would also like to ask, during the feedback process, does the optocoupler in the circuit work in a switching state or a linear sta