Type-C: Do you really understand this universal interface? (one)

When it comes to Type-C, the first thing most people think of is the charging plug for mobile phones. It not only has a simple appearance, but also avoids the inconvenience of plugging the plug forward and backward. Of course, what is more beneficial to the people is that mobile phones equipped with Type-C plugs generally have a fast charging function. I believe many Huawei users have experienced the tense moment of thirty seconds of emergency rescue. After plugging in for a few minutes, they have close to 40 to 50 power.

under,golden navigation markThe editor will talk to you:tape-CDo you really understand the universal interface?

1.What is USB?

To understand Type-C, we must first know what a USB interface is. USB (UniversalSerialBus) is a universal serial bus with a 5V voltage, supports plug-and-play, and supports hot-swappable functions. USB was born in 1994 and was jointly launched by Compaq, IBM, Intel and Microsoft to unify the interfaces of peripherals such as printers, external modems, scanners, mice, etc. As the most commonly used interface in daily life, USB4 has been developed for 25 years from the first internal version in 1994 to the present. With the continuous upgrade of USB transmission protocol, the data transmission speed has also increased exponentially.

In our common USB interface, there are many copper wires to transmit data, but the copper wire only has the function of conducting electricity. It cannot directly transmit the data we need. At this time, we need the help of the transmission protocol. In the USB transmission protocol, the chip controls the voltage of the USB interface to change according to the content to be transmitted, so as to achieve the purpose of transmitting data. What we often call USB2.0, USB3.0, USB3.1, Thunderbolt 3 and the like are data transmission protocols.

2.The birth of Type-C

In the era from USB1.0 to USB2.0, there were many interface shapes. Due to the slow transmission speed of the early protocols, most of the interfaces at that time had four wires. The left and right sides were used for charging, and the middle one was used to transmit data. The most common types of this type include Type-A, Micro-B, etc. Needless to say, Type-A is one of our most common interfaces. Micro-B is also what was called the "Android port" in the early years. However, as people require higher and higher data transmission speeds and faster charging speeds, four wires can obviously no longer meet our needs. Therefore, the newly designed new Type-A, Type-B and Micro-B came out with the faster USB3.0 protocol.

The new interface adds five more wires to the original four wires. However, such a large-space socket has serious defects on mobile phones with limited internal space. Therefore, most Android phones still use the old-fashioned Micro-B interface. But at the same time, Apple equipped the iPhone 5 with a new Lighting interface. The Lighting interface has eight wires in total. The data transmission speed is faster and it also supports reversible plugging. The key is that the size is very petite, which completely beats the Micro-B interface on Android phones at the same time. Android phones are in urgent need of a better interface to save their face. Finally, in 2014, the Type-C interface came out.

The above is the relevant introduction brought to you by the editor of Jinhangbiao. I hope it will be helpful to you. Thank you for reading!