In general, the chassis we can buy now provides front-end USB and front-end audio as well as switch-key functions. And the need for us to connect including switch machine button, hard drive indicator, audio interface and USB cable. It is easy to install the
: device descriptor, configuration descriptor, string descriptor, interface descriptor, and Endpoint descriptor.(2) a USB device can be regarded as a device that provides multiple serial ports. According to the USB specification, each serial port is called an endpoint to communicate with this endpoint, we need to open the connection to this endpoint, which is the
Introduction to USB??USB? is English universal? Serial? Bus (universal serial bus) abbreviation, is an external bus standard, used to regulate the connection and communication between the computer and external devices, is applied in the field of PC interface technology. USB interfa
TYPE-C is a USB interface, a connection interface, both sides can be inserted, the size of about 8.3mmx2.5mm, as well as other interfaces to support the USB standard charging, data transmission, display output and other functions. TYPE-C was developed by
is to say, after 63 ieee1394 devices are implemented by ieee1394, other ieee1394 networks can be connected by a bridge to achieve unlimited connections.
The intelligence of the two is different.The ieee1394 network can be automatically reset when its devices are added or removed. USB is used as the hub to determine the increase or decrease of the connected device. The applications of the two are different. USB
It is often said that a device usually has multiple configurations, and the configuration usually has multiple interfaces, and the interface usually has multiple endpoints. The interface represents a logical device, such as a sound card divided into recording and playback. When you access a device, you are accessing an interface (a logical device). In addition to
1, The advantages of USB:
The can be hot-swappable, which can be automatically recognized when plugged in, System bus powered, usb d+ line, a d- line, d+ and d- line is a differential input line; The can support multiple devices, and it is easy to extend through hub You can connect more than one device to another host Transmits data fast, up to 480mbit/s Convenient device inte
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