Something You Don't Know About USB

The USB interface plays an irreplaceable role in various aspects such as short-distance hardware communication and hardware power supply. Our quality of life has also been improved in new technologies. Coupled with the popularization of USB Type-C technology, USB has once again stood on the cusp of the storm. . To this end, this article mainly analyzes and explains the development process of USB, the line sequence diagram of USB4.0, and the advantages of USB4.0. Беспроводной модем LoRa
Development of USB Technology
1. USB 1.0
The transmission speed of USB1.0 is only 1.5Mb/s. After hundreds of days and nights of effort by technicians, USB1.0 was upgraded to USB 1.1 in the 1998 version, and the speed was also greatly improved to 12Mb/s. The high speed of USB1.1 The transmission rate of the transmission mode is 12Mbps, that is, the transmission rate is 1.5MB/s.
2. USB 2.0
The transfer rate of USB2.0 reaches 480Mbps, which is 60MB/s. The driver of USB2.0 can drive USB1.1 and is compatible with USB1.1.
For our R&D engineers, in the process of designing and developing USB2.0 hardware interface products, the main difficulty lies in the need to master the complex USB2.0 protocol, develop USB device drivers by themselves, and also need to understand the corresponding Programming for ARM, FPGA, and Linux, etc.
3. USB 3.0
The limit transfer rate of USB 3.0 under perfect conditions is 5.0Gbps, but it can only reach 80% of the limit state value in life, which is also equivalent to 10 times the limit transfer rate value of USB 2.0, and the transfer rate is significantly improved. USB3.0 adopts the 8b/10b encoding method at the physical layer, so the calculated limit transfer rate is only 4Gbps, which will be less based on the transfer rate in the real environment.
4. USB 4.0
The USB4.0 protocol was released in 2019. On the hardware interface, the latest generation of USB4.0 uses the Type-C hardware interface. It essentially uses Intel's Thunderbolt3 technology and also supports the USB standard. , compatible with protocols such as Thunderbolt3, USB3.2, USB3.1 and USB2.0.
With the development of various mobile devices in the direction of thinness and portability, and USB4.0 also uses the Type-C interface, the future device interface selection direction will uniformly use the USB4.0 protocol Type-C interface. WIFI последовательный сервер
After more than 20 years of development, USB has increased from 1.5Mbps in the original USB1.0 to 40Gbps in today's USB4.0.
In the days of rapid technological progress, USB has been seen everywhere in our lives, and it brings us great convenience, whether it is USB3.0 that is still in use now, or USB2.0 that is being phased out All of them carries the changing needs of people. Among the data transmitted through USB, whether it is data generated at work or video clips and photos that record life, they all truly witness the development of the times.
Today, the amount of data generated by all human beings is as high as 59ZB every year. The generation of USB4.0 reduces the time we spend transferring large files and allows us more time to process the files we want. However, there is too much data on the Internet now, and there are many of useless data, which will also cause us troubles in data selection. Sometimes we also think about what data is correct and increase our data in this regard. Time costs.