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.

Device

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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Philips 150P4CS, 150P4CG user manual Device
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150P4CG, 150P4CS specifications

The Philips 150P4CG and 150P4CS are notable models in the realm of computer monitors, offering a multitude of features designed to enhance user experience across various applications. Both models serve as excellent solutions for users seeking reliability, clarity, and ergonomic adjustments in their display technology.

At the core of the Philips 150P4CG and 150P4CS is their impressive display quality. They boast a 15-inch LCD panel, which delivers vibrant colors and sharp images, making them suitable for tasks ranging from document editing to graphic design. The resolution of these monitors is typically 1024 x 768 pixels, ensuring that text and visuals are rendered with precision. The high contrast ratio and wide viewing angles allow for improved visibility, even in challenging lighting conditions.

One of the remarkable features of the Philips 150P4 series is their energy efficiency. Both monitors are equipped with EcoSensor technology, which automatically adjusts the display brightness based on surrounding light conditions. This not only contributes to a more comfortable viewing experience but also helps in reducing power consumption, making these monitors an environmentally friendly choice.

Ergonomics is a significant aspect of the Philips 150P4CG and 150P4CS designs. They come with height-adjustable stands, allowing users to customize the screen height according to their preferences. Additionally, the ability to tilt and swivel the monitor enhances comfort, reducing strain on the neck and eyes during extended use. This focus on user comfort makes the monitors suitable for office environments where professionals spend long hours in front of their screens.

Connectivity options are also a strong point of the Philips 150P4 series. They typically feature various input ports, including VGA and DVI, ensuring compatibility with a wide range of devices. This flexibility allows users to connect their monitors seamlessly to desktops, laptops, and other multimedia devices without hassle.

In terms of design, both monitors showcase a sleek and modern aesthetic that fits well in any workspace. The slim profile and minimal bezel design contribute to a contemporary look while maximizing screen real estate.

Overall, the Philips 150P4CG and 150P4CS monitors stand out in their class by combining excellent display quality, energy-efficient technologies, ergonomic features, and versatile connectivity options. These monitors cater to a diverse range of users, from business professionals to home office workers, delivering an exceptional viewing experience for every task.
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