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USB Bus
USB
UNIVERSAL SERIAL BUS
USB plays a key role in three fast-growing areas: digital imaging, PC telephony and multimedia games. The presence of USB means that PCs and peripherals will work together, with a high degree of reliability, in these exciting new application areas. USB opens the door to new levels of innovation and ease of use for input devices, such as the new generation of "force-feedback" digital joysticks. There are also brand new opportunities for all types of peripherals from printers to scanners to high speed communications such as ethernet, DSL, ISDN, Broadband, Home Networking, Digital video and audio conversion, mass storage or satellite communications.
While USB will not replace traditional PC ports overnight, it is expected to rapidly become the preferred means of connecting low and medium bandwidth peripherals.
Technically, you can connect up to 127 individual USB peripherals at one time. Due to the fact that some devices reserve USB bandwidth, the practical maximum of devices is less than the theoretical maximum. However, PCI-USB add-in cards provide an independent USB bus to which even more peripherals can be connected. Virtually every category of PC peripheral is using USB for some products. In several categories the volume of USB versions of products exceeds the volume of any other version today.
Features of USB
Goals for the Universal Serial Bus
The USB is specified to be an industry-standard extension to the PC architecture with a focus on PC peripherals that enable consumer and business applications.
USB Samples
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USB Bus
USB
UNIVERSAL SERIAL BUS
USB plays a key role in three fast-growing areas: digital imaging, PC telephony and multimedia games. The presence of USB means that PCs and peripherals will work together, with a high degree of reliability, in these exciting new application areas. USB opens the door to new levels of innovation and ease of use for input devices, such as the new generation of "force-feedback" digital joysticks. There are also brand new opportunities for all types of peripherals from printers to scanners to high speed communications such as ethernet, DSL, ISDN, Broadband, Home Networking, Digital video and audio conversion, mass storage or satellite communications.
While USB will not replace traditional PC ports overnight, it is expected to rapidly become the preferred means of connecting low and medium bandwidth peripherals.
Technically, you can connect up to 127 individual USB peripherals at one time. Due to the fact that some devices reserve USB bandwidth, the practical maximum of devices is less than the theoretical maximum. However, PCI-USB add-in cards provide an independent USB bus to which even more peripherals can be connected. Virtually every category of PC peripheral is using USB for some products. In several categories the volume of USB versions of products exceeds the volume of any other version today.
Features of USB
- USB makes adding peripheral devices unimportant
- USB replaces all the diverse kinds of serial and parallel port
- USB-compliant devices (PCs and peripherals) can be plugged in & simply turned on.. It's like adding instant new capabilities to the PC
- Do not need to open the PC and do not need to worry about add-in cards, DIP switch settings or IRQ’s.
Goals for the Universal Serial Bus
The USB is specified to be an industry-standard extension to the PC architecture with a focus on PC peripherals that enable consumer and business applications.
- Ease-of-use for PC peripheral expansion
- Low-cost solution that supports transfer rates up to 480 Mb/s. Full support for ?real-time data for voice, audio, and video [br ]
- Integration in commodity device technology
- Comprehension of various PC configurations and form factors
- Provision of a standard interface capable of quick diffusion into product
- Enabling new classes of devices that augment the PC’s capability
USB Samples
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