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How to distinguish between various types of interfaces
Sep 12, 2017

                               HDMI   Interface

 High-resolution multimedia Interface (English: High definition Multimedia Interface, HDMI) is a digital video/audio interface technology, is suitable for image transmission of the special-purpose digital interface, it can simultaneously transmit audio and video signals, Maximum data transfer speed is 48gb/s


HDMI has three of interfaces. The equipment needs are mainly taken into account. such as digital camera small size, need small interface, use Micro HDMI. Three kinds of interfaces differ only in volume and function the same.


                                  DVI  Interface

Digital video Interface, that is, digital audio interface. By September 1998, the digital Display Working Group (Digital display Working Group abbreviation DDWG), which was established at the Intel Developer Forum, developed a high-speed digital signal technology that has three different interface forms, dvi-a, DVI, and DVI. DVI only Digital interface, DVI has digital and analog interface, the current application is mainly DVI (24+5).


                                    VGA Interface

VGA terminal V on the laptop (other names include RGB terminals, D 15, or mini D15), a 3-row, 15-pin DE-15. VGA terminals usually display cards, displays and other devices on the computer. is used to transmit analog signals.



                         AV Interface

The First AV interface is audio and video separation transmission interface, it consists of red, white, yellow three colors of the line, including the Yellow Line for the video transmission line, red and white is responsible for the sound transmission of the left and right channels.


                                      BNC  Interface

BNC, full name is Bayonet Nut connector (bayonet nut connector, which describes the shape of the joint visually), also known as the British Naval Connector (British Navy connector, possibly the earliest use of this joint by the British Navy) or bayonet Neill Conselman (Neill Conselman Bayonet, the joint was invented by a man named Neill Conselman).

The BNC (basic network card) interface is a 10BASE2 joint shaft fine cable, that is, a coaxial fine cable connector for transmitting analog signal connections. Now more used for Security industry monitor transmission video signal and cable TV indoor wall interface. Only a few of the new products in the 17-inch display have this interface.

BNC mode has been one of the characteristics of professional-level display. Recently, however, BNC is being replaced by DVI digital video. Of course, BNC will continue to exist for some time before the price of the DVI device and sales are not fully satisfied with the market's needs.


                                       RCA Interface

RCA connectors are often said to be Lotus head, the use of RCA cable transmission analog signal is currently the most popular audio connection. Each RCA cable is responsible for transmitting audio signals from one channel, so stereo signals need to use a pair of cables. For multichannel systems, the same number of cables should be matched to the actual number of channels. Stereo RCA audio interface, the right channel is generally marked with red, the left channel is marked with blue or white.


                              XLR  Interface 

XLR commonly known as Canonto, with three-pin plugs and locking devices. Because of the locking device, the XLR connection is quite reliable. The core interface is a 6.35 mm diameter plug, its advantages are wear-resistant, suitable for repeated plug and pull. The balance analog audio connection mainly appears on the advanced analog sound equipment or the specialized audio equipment.


                                    DIN Interface

s terminal in some projector manufacturers are called the mini-DIN interface, including 4-core (Shiying efficiency output), 5-core, 6-core, 7-core, 8-core, 9-core (can provide 6 channels of signal output) and other products are used on the projector.


                                 RJ-11 Interface

A general network phone will provide two RJ-11 interfaces. 1 RJ-11 interfaces are used to connect the telephone lines connected to the HomePNA switch, and the other 1 RJ-11 interfaces are connected to the telephone.


                                RJ-45  Interface


The RJ45 interface is typically used for data transfer and the most common application is the NIC interface.


                                                                       Apple Dock -interface


The dock interface has 9pin and 30pin. Apple started using the 30pin dedicated dock interface from the ipod 10 ago, and almost all data synchronization and peripherals depend on the interface. Since Apple launched its 9 pin Lightning Dock interface at IPhone5, the release of the new interface standard also means that Apple has been formally replaced with a 9-year 30-pin dock interface.


                                           USB  Interface


USB is the English universal serial bus abbreviation, the Chinese meaning is "universal serial Bus", is to transfer data between the PC and the digital device development technology. Standard USB, Mini USB (typical application: MP3), Micro USB (typical application: Android smart phone) become the most common USB interface at present. Widely used in personal computers and mobile devices and other information and communication products, and extended to photographic equipment, digital TV (set-top box), game consoles and other related fields. USB is evolving from USB 1.0 to the latest USB 3.1.


USB1.0: January 1996 launch, 1.5Mbps (192kb/s), Low speed (low-speed), 500mA

USB1.1: September 1998 Launch, 12Mbps (1.5mb/s), Full-speed (full-speed), 500mA

USB2.0: April 2000 launch, 480Mbps (60MB/S), high speed (high-speed), 500mA

USB3.0: November 2008 launch, 5Gbps (640mb/s), Overspeed (super-speed), 900mA

USB 3.1: Transmission speed is 10gbit/s, three-stage voltage 5v/12v/20v, maximum power supply 100W, new TYPE-C plug type no longer points to positive or negative.


                                   D-Type Interface


D-Type data interface for interfacing standards for electronic devices such as computers and peripherals. Because the shape is similar to the English letter D, hence the name D-type interface.

According to the number of interfaces into a-type (15-pin), B-type (25-pin), C-type (37-pin), D-type (50-pin), E-type (9-pin). The common computer interface is the DB25 pin connector, and the serial port should be the DE9 pin connector. Because the early computer serial port and the port are using the DB25 pin connector, and people are accustomed to the letter B and D together down, as the common name of the D-type interface, so that later the computer serial port after 9-pin interface, people more use DB9 instead of DE9 to call 9-pin interface. The result of this habit is that people now use DBXX to represent the D-type interface, while the number xx is the number of pins on the interface.



SCSI is fully known as "Small Computer system Interface" (small computer interface), is a completely different interface with the IDE (ATA), the IDE interface is a standard interface for ordinary PCs, and SCSI is not specifically designed for the hard disk interface, is a high-speed data transmission technology widely used in small-scale machines. SCSI high prices make it hard to be as popular as IDE hard disks, so SCSI drives are mainly used in high-end servers and high-end workstations; ·SCSI Small calculator System cable series ·SCSI (Small computer Systems Interface) The cable conforms to the SCIS Association standard and the SCSI is the interface of the small calculator system. According to its multiple-line pair, low attenuation, large capacity and other characteristics, widely used in high-speed printers, multi-interface digital transmission interface and other small calculator interface equipment.


SCSI interface Advantages: Wide range of applications, multitasking, large bandwidth, low CPU occupancy rate, fast speed, high transmission rate and hot-swappable, etc.

SCSI interface Disadvantage: High price, inconvenient installation, and need to set up and install driver to prevent format confusion.


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