What are advantages of USB cable - 1 views
started by kbojezhang44 on 17 Mar 20
started by kbojezhang44 on 17 Mar 20
started by kbojezhang44 on 17 Mar 20
started by kbojezhang44 on 17 Mar 20
1.Easy to use
A USB cable can be used to connect multiple different devices. In the past, the serial and parallel ports could only connect to one device. Therefore, when switching from one device to another, you had to shut down. USB saves users the trouble. In addition to connecting multiple devices in series, the USB cable also supports hot plugging.
In terms of software, the driver and application software designed by the USB cable can be started automatically without the user having to do more operations, which also brings great convenience to the user. USB devices are also not involved in IRQ conflicts. The USB port uses its own reserved interrupt alone, and will not compete with other devices for the limited resources of the PC, which also saves users the trouble of hardware configuration.
2.Fast enough
Speed performance is one of the outstanding features of USB technology. The maximum transmission rate of the USB cable can reach 12Mb per second, which is 100 times faster than the serial port and more than ten times faster than the parallel port.
3. Flexible connection
The USB cable supports serial connection of multiple different devices. One USB port can theoretically connect 127 USB devices. The connection method is also very flexible. You can use a serial connection or a hub to connect multiple devices together, and then connect to the USB port of the PC. In the USB mode, all peripherals are connected outside the chassis. It is not necessary to open the chassis to connect the peripherals, allowing the peripherals to be hot-plugged without having to power off the host. USB uses a "cascade" method, that is, each USB device is connected to a peripheral USB socket with a USB plug, and it itself provides a USB socket for the next USB peripheral connection. Through this daisy-chain-like connection, a USB controller can connect up to 127 peripherals, and the distance (cable length) between each peripheral can reach 5 meters. USB can intelligently identify the insertion or removal of peripheral devices on the USB chain. USB provides a good solution for PC peripheral expansion.
4. Independent power supply
Common devices that use serial and parallel ports require a separate power supply system, while USB devices do not, because the USB interface provides built-in power. The USB power supply can provide 5 volt power to low-voltage devices, so new devices do not need special AC power, which reduces the cost of these devices and improves cost-effectiveness.
5.Support multimedia
The USB cable provides two-way data support for the phone. The USB cable can support asynchronous and isochronous data transmission, enabling the phone to integrate with a PC to share voice mail and other features. The USB cable also has high-fidelity audio. Because USB audio information is generated outside the computer, it reduces the chance of electronic noise interfering with the sound quality, thereby giving the audio system a higher fidelity.