Device

Glossary

A Universal Serial Bus device that provides additional connections to the Universal Serial Bus.

Hubs are a key element in the plug-and-play architecture of USB. The Figure shows a typical hub. Hubs serve to simplify USB connectivity from the user's perspective and provide robustness at low cost and complexity.

Hubs are wiring concentrators and enable the multiple attachment characteristics of USB. Attachment points are referred to as ports. Each hub converts a single attachment point into multiple attachment points. The architecture supports concatenation of multiple hubs.

The upstream port of a hub connects the hub towards the host. Each of the other downstream ports of a hub allows connection to another hub or function. Hubs can detect, attach and detach at each downstream port and enable the distribution of power to downstream devices. Each downstream port can be individually enabled and configured at either full or low speed. The hub isolates low speed ports from full speed signaling.

A hub consists of two portions: the Hub Controller and Hub Repeater. The repeater is a protocol-controlled switch between the upstream port and downstream ports. It also has hardware support for reset and suspend/resume signaling. The controller provides the interface registers to allow communication to/from the host. Hub specific status and control commands permit the host to configure a hub and to monitor and control its ports.

A logical or physical entity that performs a function. The actual entity described depends on the context of the reference. At the lowest level, device may refer to a single hardware component, as in a memory device. At a higher level, it may refer to a collection of hardware components that perform a particular function, such as a Universal Serial Bus interface device. At an even higher level, device may refer to the function performed by an entity attached to the Universal Serial Bus; for example, a data/FAX modem device. Devices may be physical, electrical, addressable, and logical.

Downstream

The direction of data flow from the host or away from the host. A downstream port is the port on a hub electrically farthest from the host that generates downstream data traffic from the hub. Downstream ports receive upstream data traffic.

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150V3F specifications

The Philips 150V3F is a versatile display solution designed to cater to various user needs, combining advanced technology with user-centric features. This monitor is especially popular among office professionals, gamers, and multi-media enthusiasts due to its excellent performance and reliability.

One of the standout features of the Philips 150V3F is its 15-inch display with a resolution of 1024 x 768 pixels (XGA). This resolution provides sharp image quality, delivering vibrant colors and clear details that enhance the viewing experience for both work and entertainment. The monitor utilizes a TFT LCD panel, which offers wide viewing angles and consistent color reproduction, making it suitable for collaborative work environments where multiple viewers might need to see the screen at once.

In addition to its display capabilities, the Philips 150V3F comes equipped with various connectivity options, including VGA and DVI ports, allowing it to be easily connected to a wide range of devices such as computers, laptops, and gaming consoles. This versatility makes it an ideal choice for environments that require flexible connectivity options.

Another significant characteristic of the Philips 150V3F is its eco-friendly design. The monitor complies with Energy Star standards and features low power consumption technology, making it a sustainable choice for eco-conscious consumers and businesses looking to reduce energy costs. The monitor also comes with an adjustable stand that allows users to tilt the screen to their preferred viewing angle, enhancing ergonomics and comfort during extended use.

To further improve user experience, the display incorporates advanced technologies such as SmartContrast, which automatically adjusts the contrast and brightness according to the content being viewed. This feature ensures optimal clarity for varying applications, from professional tasks to gaming and movie watching.

Overall, the Philips 150V3F is a reliable and feature-rich monitor that meets the demands of diverse users. With its compact size, excellent image quality, eco-friendly design, and versatile connectivity options, it remains a great choice for anyone looking to enhance their visual experience, whether in a professional or home setting.