Do you think the charging interface of the mobile phone we use now is convenient? If you feel inconvenient, you may find it very convenient to look at the development process of the mobile phone interface.
USB full name user service, Chinese translated as Universal Serial Bus.
As the name suggests, USB was born to achieve the purpose of universality.
Before the birth of USB, keyboards and mice used more ps-two interfaces, gamepads had special game ports, printers and other peripherals, and also used serial ports and parallel ports.
When the mobile phone was just born, or the big brother form, charging needs to use a seat charge, and the block is big and slow.
In 1996, Nokia introduced the 14-pin Pop-Port interface, which later became a dedicated interface for mobile phone data transmission, headphones, camera connections, etc.
At that time, the mobile phone, the charging interface was only responsible for charging, and the data interface was responsible for data.
In 2003, the iPod switched from FireWire to a 30 Pin interface, and over the next decade, it became a dedicated interface for Apple's mobile devices, including the iPod and the Jobs-era iPhone.
On the Android side is the Mini USB, which is divided into A type, B type and AB type. Among them, the 5Pin Mini B type interface can be said to be the most common. This interface is favored because it only has one side that can be inserted correctly.
Micro USB came out of the new USB standard born in 2007, and before the advent of Type C, almost all Android phones used this interface.
With the development of science and technology, Micro USB not only can not meet the need for fast charging of large-capacity batteries, but also difficult to keep up with the data transfer rate of USB 3.1. The USB Type C interface can implement the USB 3.1 standard and the fastest transfer speed can reach almost 40GB/s.
Moreover, it can be plugged in and out, and it is more convenient to use; the charging power of this line can reach up to 100W.
Now, USB-C is also our most commonly used data cable.