If we spent a considerable price to buy some electronic equipment, but do not know how to use the interface which is not very distressed. Feeling wasted half the features, I was not very clear, so he access to some information, to sum up. Since the replacement of electronic equipment was so fast, I can only say at this stage of a common electronic device interface, time is August 4, 2019.
1, the image audio and video interface
A, VGA interface (Video: analog)
VGA IBM 1987 with a PS / 2 machines with Release A video transmission standard. Blue has an interface plug is the most recognizable: VGA interface has three rows of pins, each row of five, a total of 15 stitches. VGA interface uses an analog signal, does not support audio.
B, DVI Interface (Video: Digital Signal)
the DVI Interface There are three sizes, namely, DVI-I (the Integrated mixing), DVI-D (Digital digits) and DVI-A (Analog analog), wherein the DVI-I and DVI- D is also divided into two types of "single-channel" and "dual-channel." DVI signal transmission interface uses all-digital format, the corresponding analog signal is VGA interface. Which is a digital signal, slightly better than VGA, but still do not support audio.
C, HDMI interfaces (audio and video: digital signal)
the HDMI compared DVI interface supports audio output, and has a higher bandwidth, it can be regarded as the most mainstream video output interface, because the interface becomes smaller, has also been widely used in televisions, monitors, notebook computers and other equipment.
D, DP interface (audio and video: Digital Signal)
在目前的显示器中几乎都标配了DP接口，它可以看做是 HDMI 接口的升级版，但是内部数据的传输方式与 DVI 和 HDMI 完全不同，有着更高的带宽。
E、Type-C接口
在应用于手机上时，很多人称它为 Type-C 接口，但是应用在电脑上时，更多的人则叫它 USB-C 接口，虽然叫法不同，但是在本质上是同一种接口。
“Type”指的是接口类型
“USB”指的是接口规范标准
【拓展：type-c理论功能】
①手机直连网线
②手机连接U盘
③手机投屏
F、色差分量接口（视频）
色差分量接口是色差接口使用不是很普遍，主要的原因是一些CRT电视机并没有提供色差分量的输入接口。可以在一些专业级视频工作站/编辑卡专业级视频设备或高档影碟机等家电上看到有YUV、YcbCr、Y/B-Y/R-Y等标记的接口标识，虽然其标记方法和接头外形各异但都是指的同一种接口——色差端口( 也称分量视频接口) 。
简单的说，相比过去的AV和S端子，色差是将信号分为红、绿、蓝三种基色来输入的。
G、AV复合视频接口（音视频）
简单理解就是，我们将色差分量接口的三个接线（绿亮度、蓝x轴方向、红y轴方向）用一个复合视频接口代替（×××的）。外加两个音频接口（也就是下面讲到的N、RCA模拟音频接口），就是AV复合视频接口。
H、S-视频接口（视频）
S端子也是非常常见的端子，其全称是Separate Video，也称为 SUPER VIDEO。S-Video连接规格是由日本开发的一种规格，S指的是“SEPARATE（分离）”，它将亮度和色度分离传输，避免了混合视频信号传输时亮度和色度的相互干扰。S端子实际上是一种五芯接口，由两路视频亮度信号、两路视频色度信号和一路公共屏蔽地线共五条芯线组成。
I 、RS-232C接口
其中EIA(Electronic Industry Association)代表美国电子工业协会，RS（Recommended standard）代表推荐标准，232是标识号，C代表RS232的最新一次修改。
【拓展：是不是很像VGA】
①VGA接口最早可以追溯到1987年，VGA 接口有3排针脚，每排5个，共有15针。
②VGA接口采用的是模拟信号，这种信号有一个明显缺点，就是抗干扰能力弱。
③RS232接口是计算机上的通讯接口的一种。
④通常 RS-232 接口以9个引脚或是25个引脚的型态出现，一般计算机上会有两组 RS-232 接口，分别为 COM1 和 COM2。
L、光纤音频接口（音频）
光纤音频接口TosLink，全名Toshiba Link，这是日本东芝(TOSHIBA)公司较早开发并设定的技术标准，在视听器材的背板上有Optical作标识。现在几乎所有的数字影音设备都具备这种格式的接头。
M、3.5mm立体声接口（音频）
它可以在实现耳机的功能的基础上，同时实现麦克风和线控等其他功能。目前市面上常见的，有OMTP和CTIA两种标准。
N、RCA模拟音频接口（音频）
O, XLR interfaces
originally terminals "Cannon X" series, after the revision incorporates a latch (Latch) becomes "Cannon XL" series, then the terminal contact surfaces of the rubber wrapped (Rubber), has become a source of abbreviations of the XLR . 
P, IEEE1394 Interface
Computer Interface IEEE1394, commonly known as FireWire, is mainly used for video capture, visible on the high-end INTEL motherboard and digital video cameras (DV). IEEE 1394, FireWire alias (FireWire) interface developed by Apple-led coalition developed a high-speed transfer interface, data transfer rate is usually 800Mbps. FireWire (FireWire) is a trademark of Apple Inc. Sony products call this interface iLink. 
Q, RF television signal interface