cable is a cable TV cable interface; cable network is a network based on cable TV network; Cable access is a network access technology based on CATV (HFC) network, which has been used in network applications in recent years. Developed due to the expansion of the Internet, cable TV networks are mainly used for data transmission.
#The operating environment of this tutorial: Windows 10 system, Dell G3 computer.
What is the interface of cable?
Cable is cable television. Cable network is a network based on cable television network. Cable access is a network access technology based on CATV (HFC) network. It has been developed with the expansion of network applications in recent years. It mainly uses cable TV networks for data transmission.
Related introduction:
USB Cable is a serial bus standard that connects computer systems and external devices. It is also an input and output interface technical specification and is widely used. It is used in information and communication products such as personal computers and mobile devices, and has been extended to photographic equipment, digital TV (set-top boxes), game consoles and other related fields.
Universal Serial Bus (English: Universal Serial Bus, referred to as "USB")
When multimedia computers first came out, the transmission interfaces of external devices were different. For example, printers could only be connected to LPT. The port and modem can only be connected to RS232, the mouse and keyboard can only be connected to PS/2, etc. The complex interface system, coupled with the restriction that drivers need to be installed and restarted before use, can inevitably cause trouble to users. Therefore, creating a unified and hot-swappable external transmission interface has become an inevitable trend.
USB currently supports 3 data signal rates, and the USB device should correctly indicate the rate it uses on its casing or sometimes itself. USB-IF certifies devices and provides special trademark licenses for basic speed (low speed and full speed) and high speed for devices that pass compliance testing and pay a licensing fee.
Low speed rate of 1.5 Mbps. Mainly used for Human Interface Devices (HID), such as keyboards, mice, joysticks, etc.
Full speed of 12 Mbps. Before USB 2.0, it used to be the highest rate, and subsequent higher-rate high-speed interfaces should be compatible with full-speed rates. Bandwidth can be divided among multiple full-speed devices on a first-come, first-served basis; it is not uncommon to exceed the bandwidth limit when using multiple isochronous devices. All USB ports support full speed.
High-speed speed of 480 Mbps. Not all USB 2.0 devices are high speed. High-speed devices should be compatible with Full Speed when plugged into a Full-Speed port. The high-speed connection port has a so-called transaction translator function, which can isolate the data flow between full-speed, low-speed devices and high-speed, but will not affect the power supply and series depth.
Super high-speed speed of 5Gbps. Compared with the current maximum theoretical speed of 480Mbps of USB 2.0, USB 3.0 can support 5.0Gbps, which is 10 times that of USB 2.0. If USB 3.0 is applied to storage devices such as external hard drives, flash drives, or Blu-ray burners, data transfer time will be significantly shortened.
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