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You Do Not Know The Data Line Interface Type
May 17, 2018


     What is a data cable? A data cable is a link between an electronic device such as a computer and a mobile phone. It functions as an information transmission, and on the other hand, it is used for charging. Of course, we all know this because it is often used. Do you know the type of data line interface?

     Mobile phone data lines are classified into COM and USB interfaces according to interface type

1. COM interface is also called serial communication interface, is connected to the back of the desktop computer, the com mouth on the computer is usually 9-pin, there are also 25-pin interface, the maximum rate of 115200bps. Currently being eliminated. The advantage is low cost, support brush machine (some mobile phones can only use serial line brush machine); the disadvantage is extremely inconvenient to remove and pull, does not support laptops, transmission speed is relatively slow.


2.The USB interface is currently the mainstream. The advantage is that it is convenient and fast and stable, and it supports all types of computers. The disadvantage is that the price of ICs (central control chips) is slightly higher, and other data lines do not support the brushing function. The usb interface is an external bus standard that regulates the connection contract between a computer and an external device. The usb interface supports plug-and-play and hot-plugging of devices. It is an interface technology applied in the PC field. Moreover, the USB interface can also realize dual-machine interconnection through a dedicated USB connection line, and can expand more interfaces through the Hub. USB has the advantages of high transmission speed, easy to use, hot-swappable, flexible connection, and independent power supply. It can connect mouse, keyboard, printer, scanner, camera, charger, flash drive, MP3 player, mobile phone, digital camera, mobile Hard disk, external optical drive/floppy drive, USB network card, ADSL Modem, Cable Modem, etc., almost all external devices. In theory, the USB interface can be used to connect up to 127 peripherals. Since the introduction of USB in 1996, it has successfully replaced the serial port and parallel port, and has become one of the necessary interfaces for personal computers and a large number of smart devices in the 21st century.