From The Blog
Author：danny / time：2018-06-21 / The number of clicks：753
Computer peripherals, including mouse and keyboards, which connect to computers and plug and play devices can be easily connected through the Universal Serial Bus (USB) technology. A USB is designed to work with a variety of devices while supporting hot swapping. Therefore, it is necessary to use a USB connector to connect a computer to a digital camera for inter-transfer photo and data without having to restart the computer.
The new USB technology has great advantages over earlier technology and it has been quickly recognized and welcomed by the market. However, the most widely used USB is the 1.1 version, in which data transfer speed is limited to 12Mbps/s. This transfer speed is sufficient for keyboards, mouse and CD-ROM drive, but when connecting to a digital camera or a mobile hard drive, this speed is hardly enough.
Users want to get a faster connection speed than what they have now; therefore, the most common technology for home PCs to transmit digital video is the IEEE (Institute of Electrical and Electronics Engineers) 1394. This technology also known as FireWire, far exceeds the transmission speed of USB version 1.1 at 400 Mbps. This is why most of the older digital cameras are equipped with IEEE 1394 (FireWire) ports instead of USB ports. With the advancement and development of technology, digital cameras have now entered the era of USB 2.0 transmission.
The current version of the USB technology is USB 2.0. This version of the USB connector has a data transmission speed of 480 Mbps, slightly exceeding IEEE 1394. This has also led us into an era of new high-speed USB. At the same time, USB technology offers unparalleled compatibility with the IEEE 1394, gradually turning USB 2.0 technology into a universal connection system for computer peripherals. USB devices are now mostly running at 12 Mbps (for full-speed devices) or 1.5 Mbps (for low-bandwidth devices). With the advent of the USB 2.0 era, we are able to use more computer peripherals at a faster rate. These devices can use the 480 Mbps bandwidth provided by a USB 2.0. This high speed is critical for devices that require bandwidth (such as mass storage devices), although not all devices can currently operate at 480 Mbps. For example, a USB 2.0 mouse is still a low-speed device and may only run at 1 Mbps in most situations, but high-speed USB 2.0 CD-RW devices can fully take advantage of the USB 2.0 technology to transfer data at high speed and burn CDs faster.