Last year, I switched from hardware to Linux development. At that time, I was working on drivers. When I went out for interviews, everyone said that they were not hiring for driver positions, only app
Everything has a process of occurrence, development and extinction, and LED is no exception. It has a certain lifespan. In the early days, LED was just a gift such as a flashlight or table lamp. It wa
The first commercial IC digital signal processor was Intel's 2920, which replaced analog filter banks in full-duplex, 1200-bps digital hard modems as early as 1979. At the same time, the rapid prolife
When I first started learning about circuits, I didn't have a deep understanding of power supplies. I thought that it was enough to make a voltage that matched the energy supply. Later, I gradually un