What interface is currently used to connect the mouse to the host computer?

At present, more and more "USB" interfaces are used to connect the mouse and the host computer. USB is a technical specification for input and output interfaces that regulates the connection and communication between computers and external devices. It is widely used in information communication products such as personal computers and mobile devices. The USB interface has a hot-swappable function, so there is no need to shut down and restart the computer. Instead, the USB can be plugged in directly when the computer is working.

The operating environment of this tutorial: Windows 7 system, Dell G3 computer.

Currently, the connection between the mouse and the host uses the USB interface more and more.

Universal Serial Bus (English: Universal Serial Bus, abbreviation: USB) is a serial bus standard and a technical specification for input and output interfaces. It is widely used in information such as personal computers and mobile devices. Communication products, and expanded to photographic equipment, digital TV (set-top boxes), game consoles and other related fields. The latest generation is USB4, with a transmission speed of 40Gbit/s, a three-stage voltage of 5V/12V/20V, and a maximum power supply of 100W. The new Type C interface allows blind plugging of the front and back.

USB is an external bus standard that regulates the connection and communication between computers and external devices. The USB interface has hot-swappable function. The USB interface can connect a variety of peripherals, such as mice and keyboards. USB was jointly launched in 1996 by Intel and other companies at the end of 1994. It has successfully replaced the serial port and parallel port and has become a must-have interface for today's computers and a large number of smart devices. The USB version has experienced years of development and has now developed into version 3.1. For most engineers, the main obstacles in developing USB2.0 interface products are: facing the complex USB2.0 protocol, writing their own USB device drivers, and being familiar with microcontroller programming. This not only requires considerable VC programming experience, but also the ability to write USB interface hardware (firmware) programs. So most people gave up developing USB products themselves.

USB devices mainly have the following advantages:

• Can be hot-swapped. That is, when using an external device, the user does not need to turn off and on again, but can directly plug in the USB when the computer is working.

• Easy to carry. Most USB devices are known for being "small, light and thin", which is very convenient for users to carry large amounts of data with them. Of course, USB hard drive is the first choice.

• Uniform standards. Common ones are hard drives with IDE interfaces, serial mouse and keyboards, and parallel port printers and scanners. But with USB, these application peripherals can all be connected to personal computers using the same standards. Then there are USB hard drives, USB Mouse, USB printer, etc.

• Can connect multiple devices. USB often has multiple interfaces on personal computers, which can connect several devices at the same time. If you connect a USB HUB with four ports, you can connect it again; four USB devices, and so on, you can connect as many times as you want. , connect all your home devices to a personal computer at the same time without any problems (note: can connect to up to 127 devices).

Extended knowledge: Type-C

Type-C is a new USB interface form, which is accompanied by the latest USB 3.1 standard. Sora was born. Released by the USB-IF organization in August 2014, it is a brand-new interface developed by the USB standardization organization to solve the long-term disadvantages of USB interfaces such as inconsistent physical interface specifications and the only one-way transmission of power. It integrates charging, display, and data transmission. functions in one. The biggest feature of the Type-C interface is that it supports insertion in both front and back directions, officially solving the worldwide problem of "USB can never be plugged in correctly". It can be plugged in either way.

The TYPE-C hardware interface has obvious features, mainly including the following points:

(1) Supports symmetrical plugging and unplugging, solving the problem of reverse plugging in practical applications;

(2) The interface is slim and can support thinner and lighter devices, making the design of portable devices thinner and smaller;

(3) Supports higher power transmission, up to 100 watts , support more high-power load equipment.

(4) Support single port and dual port TYPE-C, flexible application.

(5) Supports two-way power transmission, both sending and receiving power.

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