Glossary

Usually made from amorphous silicon (a-Si) and used as a switch to a charge storage device located below each sub-pixel on an active matrix LCD.

U

USB or Universal Serial Bus

A smart plug for PC peripherals. USB automatically determines resources (like driver software and bus bandwidth) required by peripherals. USB makes necessary resources available without user intervention.

●USB eliminates "case anxiety" -- the fear of removing the computer case to install add-on peripherals. USB also eliminates adjustment of complicated IRQ settings when installing new peripherals.

●USB does away with "port gridlock." Without USB, PCs are normally limited to one printer, two Com port devices (usually a mouse and modem), one Enhanced Parallel Port add-on (scanner or video camera, for example) and a joystick. More and more peripherals for multimedia computers arrive on the market every day. With USB, up to 127 devices can run simultaneously on a computer.

●USB permits "hot plug-in." There's no need to shut down, plug in, reboot and run set-up to install peripherals. And no need to go through the reverse process to unplug a device.

In short, USB transforms today's "Plug-and-Pray" into true Plug-and-Play!

Hub

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 providing 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-

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Philips 190EW9 user manual USB or Universal Serial Bus, Hub
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190EW9 specifications

The Philips 190EW9 is a versatile and aesthetically pleasing monitor that excels in both functionality and design. At the heart of its appeal is the 19-inch display, which features an elegant widescreen format, providing a spacious viewing area ideal for various applications, from everyday computing tasks to multimedia entertainment.

This monitor employs a high-quality TN (Twisted Nematic) panel technology, recognized for its rapid response times and brightness capabilities. The 190EW9 boasts a resolution of 1440 x 900 pixels, delivering clear and crisp visuals suitable for watching videos, playing games, or browsing the web. The widescreen aspect ratio enhances the viewing experience, allowing users to multitask efficiently by displaying multiple windows side by side.

One of the standout features of the Philips 190EW9 is its commitment to energy efficiency. The monitor incorporates various technologies aimed at reducing power consumption, including an energy-saving mode. This not only benefits the environment but also contributes to lower electricity bills, making it an economical choice for users concerned about sustainability.

The design of the Philips 190EW9 is equally commendable. It sports a sleek and modern aesthetic with a glossy finish that complements any workspace. The monitor is equipped with a tilt function, providing users the ability to adjust the angle for optimal viewing comfort. The slim profile further enhances its appeal, making it an attractive addition to any home or office setup.

Connectivity options are abundant with the 190EW9, featuring both VGA and DVI inputs. This flexibility ensures compatibility with various devices, from older computers to modern graphics cards, facilitating seamless integration into a wide range of setups.

In terms of additional technologies, the Philips 190EW9 includes SmartContrast, a feature that enhances images by adjusting the contrast dynamically based on the content being displayed. This results in improved image depth, richness, and detail, enhancing the overall viewing experience.

In conclusion, the Philips 190EW9 is a well-rounded monitor that combines impressive performance features with a stylish design. With its excellent display capabilities, energy-efficient technologies, and versatile connectivity options, it is an ideal choice for anyone seeking a reliable monitor for both work and play.
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