Briefly Describe The Evolution Process Of USB Data Cable

2022 12/21

When I first came into contact with the computer a long time ago, the computer did not seem to have a USB Cable interface. At that time, external devices such as printers, keyboards and mice were connected to the computer with interfaces of various shapes, colors and shapes. Before the emergence of USB data cables, the above-mentioned connecting cables were commonly used in the market, and had many disadvantages. First of all, different devices need to be connected with different connecting cables, and almost none of these interfaces support hot-swapping, and cannot be plugged and played. To use it, you have to repeatedly debug and configure it before it can be used. Often, if you don`t pay attention to the lower right corner of the computer, it will prompt that it does not support power supply and other shortcomings. Over time, these inconvenient interfaces gradually disappeared, and finally the advent of USB solved the above problems.

It can be hot-swappable, and plugging and unplugging when the computer is turned on does not affect the use without debugging; it can be plug-and-play, and can be recognized and read immediately after plugging in, without configuration; it can also charge external devices. This may be the reason why the USB data cable can become one of the most enduring interfaces: universal! With the advancement of science and technology, products are constantly being introduced. The USB interface is also slowly improving, and there are also MINI USB and the like.

There are three types of classification of USB interface data lines: without IC, with IC, special chip.

Without IC: There is no central control chip, you must plug in your mobile phone and computer to recognize the line, and the price is cheap.

Special chips: non-ordinary popular chips, dedicated special type chips

With IC: With a central control chip, it can recognize the line without plugging in a mobile phone or a computer. Since the price of an IC is more than 10 yuan, the price is more expensive than that without an IC. The working principle of the data cable with a chip is USB to COM, which converts the USB interface into a serial port and displays it on the computer.

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