The USB interface (Universal Serial Bus) is a universal high-speed serial interface. Its main feature is its high-speed transmission characteristics. The theoretical speed limit of USB1.1 can reach 12
Differential pairs work by making the received signal equal to the difference between two complementary signals that are referenced to each other, thus greatly reducing the effects of electrical noise
As the original document is too large, the point-to-point method takes up a lot of bandwidth. Now we use Dianluo sharing, which will be very fast. In order to facilitate downloading, it is repackaged
I have done various tests on LEDs, buttons, display screens, RAM and FLASH using test software before. Today, I wanted to set the crystal oscillator, but it didn't work. It said that the device could