Serial Bus (USB) technology allows hardware to be simply plugged in and automatically recognized (Plug and Play) while the computer is running, unlike conventional serial and parallel ports. This "hot-swapping" technique is one of several features that USB shares with the faster, more expensive IEEE-1394 FireWire standard.
The user no longer has to be concerned with tiny DIP switches, IRQ conflicts, or internal adapter card installation all of which add a magnitude of error possibility and a magnitude of setup time. Currently, the only operating systems that fully support the USB specification are the popular Windows 98 / 2000 / XP and Apple OS 8.x / 9.x. platforms. Most USB peripherals will provide USB drivers compatibility for these major operating systems.
USB also features simplified communications protocols, which means that host and peripheral interface controllers can be comprised of relatively few components. Typical USB host controllers and peripheral controllers use less than half the total number of components needed by FireWire adapters, resulting in significant cost savings and simplified interfacing.
The user no longer has to be concerned with tiny DIP switches, IRQ conflicts, or internal adapter card installation all of which add a magnitude of error possibility and a magnitude of setup time. Currently, the only operating systems that fully support the USB specification are the popular Windows 98 / 2000 / XP and Apple OS 8.x / 9.x. platforms. Most USB peripherals will provide USB drivers compatibility for these major operating systems.
USB also features simplified communications protocols, which means that host and peripheral interface controllers can be comprised of relatively few components. Typical USB host controllers and peripheral controllers use less than half the total number of components needed by FireWire adapters, resulting in significant cost savings and simplified interfacing.
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