When the computer powers up, it queries all the devices that are connected to the bus and assigns them an address. It aims to give you a single standardized way to connect up to 127 devices to the one computer. The goal of USB is to end the headache of using different connectors for different devices such as serial and parallel connections.
It has also taken the place of separate power chargers for portable devices. USB has replaced most of the earlier interfaces such as serial and parallel ports. It has achieved widespread use on other devices, such as SmartPhones, PDAs and video game consoles as well. NOTE: USB was intended to standardize the connection of external devices to personal computer. (Such as keyboards, pointing devices, digital cameras, printers, portable media players, disk drives and network adapters.) This is both to communicate and to supply electric power.
0 kommentar(er)
