USB or Universal Serial Bus

Glossary

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- 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.

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200WB7 specifications

The Philips 200WB7 is a remarkable display that caters to both professional and personal use, showcasing a blend of advanced technology and user-friendly features. With its sleek design and excellent performance, this monitor stands out in a crowded market, making it an excellent choice for various computing needs.

One of the defining characteristics of the Philips 200WB7 is its impressive 20-inch display, which offers a resolution of 1600 x 1200 pixels. This higher-than-average resolution ensures sharp. clear images and vibrant colors, making it suitable for graphic design, video editing, and other visually demanding applications. The 4:3 aspect ratio strikes a balance between traditional and modern viewing experiences, providing ample vertical space for document editing and web browsing.

The monitor employs advanced LCD technology, which enhances its viewing angles and color accuracy. The excellent color reproduction is further complemented by the use of a brightness level of up to 250 cd/m², ensuring that visuals remain clear even in brightly lit environments. Users can enjoy a consistent picture quality from various angles, as the wide viewing angles reduce color shifts and maintain image integrity across the screen.

Philips prioritizes user comfort with features like Flicker-Free technology, which reduces eye strain during extended usage. The LowBlue mode also minimizes harmful blue light emissions, allowing for longer viewing periods without discomfort. These ergonomic advancements are perfect for professionals who spend long hours in front of their monitors.

Connectivity is another strong point of the Philips 200WB7. It includes a variety of input options, such as VGA and DVI ports, allowing for seamless integration with different computers and devices. This versatility ensures that users can easily switch between multiple devices without any hassle.

Moreover, the monitor is designed with energy efficiency in mind, meeting Energy Star requirements which help to reduce power consumption and lower utility bills. The eco-friendly approach is an added attraction for environmentally conscious consumers.

Overall, the Philips 200WB7 is a versatile monitor that combines exceptional quality, user-friendly features, and sleek aesthetics. Whether for professional use in an office setting or for personal enjoyment at home, it stands as a reliable option that enhances productivity and provides an enjoyable viewing experience.