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USB, DVI, HDMI are three important connectors in computer fields. As the application technology of information becomes more and more sophisticated, the application field and working principle of these connectors have also been widely used in many areas.

Universal Serial Bus (USB) is an external interface standard that provides the user with information and communication access to the machine. It supports speeds of up to 480 Mbps with speeds of up to 12 Mbps for the lower-speed USB 1.1. It also supports up to five downstream ports and one upstream port, with a protocol that supports large flow control. Moreover, USB also provides a plug and play feature, which allows users to connect to the computer without having to install any software.

Digital Visual Interface (DVI) is a digital video interface that provides pure digital video signals for images, text, and audio. It encompasses the complete range of video signals from VGA (video graphics array), SVGA (super video graphics array), to HDTV (high definition television). DVI offers a higher resolution image than the standard VGA port. It also allows for digital audio connections for a wide range of devices, including DVD players, digital television receivers, and more.

High Definition Multimedia Interface (HDMI) is a digital interface standard that offers a more efficient, secure, and cost-effective way of displaying video and audio content than traditional analog connections such as SCART. It is used mainly for high-definition devices such as HDTVs and Blu-ray players. HDMI offers full-speed bidirectional digital video and audio transmission to deliver digital signals with crystal-clear resolution and pixel perfect accuracy. It also offers an advanced protocol that combines the functionalities of both USB and DVI to increase bandwidth and reduce the amount of cables needed.

The application field and working principle of USB, DVI, and HDMI connectors depend on the particular type and model used. In general, USB is used for connecting peripheral devices such as keyboards, mice, and printers. DVI usually provides full digital video output with data rates up to 5Gbps, making it popular for AV devices. HDMI is a popular choice for connecting high-definition devices such as HDTVs and Blu-ray players. All of these connectors utilize a variety of cable sizes and configurations, so it is important to understand the specific type and model of the connector before making a purchase.

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