Glossary

USB 或通用串行總線 (Universal Serial Bus)

個人電腦週邊設備的一種靈便插口。 USB 自動辨識週邊設備所需的資源(比如驅動 器軟體和總線帶寬)。USB無需用戶參預即能運用各種資源。

USB 消除了"外殼恐懼症"--一種由打開電腦外盒安裝附加週邊設備所引起的害

怕感。USB同樣避免了安裝新週邊設備時對複雜的"中斷請求"(IRQ)設置的調整。

USB清除了"端口擁塞"現象。若無USB,個人電腦通常限於一臺打印機、兩個通訊端口 裝置(一般是滑鼠和調制解調器),一個增強平行端口附加裝置(例如掃描器或視頻照 像機),以及一個遊戲手柄。越來越多的多媒體電腦運用的週邊設備每天都出現於市 場。有了USB,多至127個裝置同時可以運用於一臺電腦上。

USB 允許"熱插入"。無需關機、插入、重新起動、運行安裝系統來安裝週邊設備 。也無需進行相反程序拔出某一裝置。

簡而言之,USB 將當今的"插入即怕"變成真正的"插入即用"!

插座 (Hub)

一種通用串行總線裝置,為提供通用串行總線另外的連接。

插座是 USB"插入即用"結構中的主要部件。下圖顯示一個典型的插座。插座從用 戶的角度簡化了 USB 之連接性,在廉價和簡捷的基礎上提供了高性能。

插座為帶線接頭,使 USB 的多附件特性得以實現。附加點則被稱為端口。每一插座 將單個附加點轉變成多個附加點。其總結構支持多個插座的相互串聯。

插座的上游端口連接插座與主機。插座每一下游端口可與另一插座或功能裝置連接。插座能夠 檢測、附上和拆下於每一下游端口,促使電源向下游裝置的輸送。每一下游端口皆能單獨起 動、設置成全速或慢速。

一個插座由兩部份組成﹕插座控制器和插座中繼器。中繼器是由規程控制的上游端口和下游端 口之間的樞紐。它也配有重設和暫停/繼續信號的硬體支持。控制器提供接口寄存器,促成主 機間的往返通訊。插座具體狀態和控制指令允許主機設置某一插座及控制其端口。

裝置

一個執行某一功能的邏輯性或物質性實體。所述實際實體依其所涉及情況而定。在最低層次, 裝置可指單個硬體元件,例如存儲器。在較高層次,它可指執行某一特別功能的一套硬體元 件,例如通用串行總線接口裝置。在更高層次,裝置可指連接於通用串行總線的執行功能的實 體,例如數據/傳真調控解調器。裝置可能是物質的、電子的、可按址訪問的和邏輯性的。

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Philips 191EW9 user manual USB 或通用串行總線 Universal Serial Bus, 插座 Hub

191EW9 specifications

The Philips 191EW9 is a monitor designed to deliver premium performance aimed at both productivity and entertainment. With a sleek, modern aesthetic, it complements any workspace or home environment while offering a range of features that enhance user experience.

One of the standout features of the Philips 191EW9 is its 19-inch LCD display, which provides a resolution of 1440 x 900 pixels. This widescreen format is particularly beneficial for multitasking, allowing users to view multiple windows side by side without the need for a larger which can take up more desktop space. The monitor offers vibrant colors and sharp image quality, thanks to its high brightness and excellent contrast ratios, making it suitable for both gaming and media consumption.

The Philips 191EW9 incorporates advanced technology, including PowerSensor, which uses a built-in proximity sensor to detect the presence of users. When the user steps away from their desk, PowerSensor automatically reduces the brightness of the display, saving energy and reducing power costs. This not only benefits the environment but also extends the life of the monitor.

Another key characteristic of the Philips 191EW9 is its ergonomic design. The monitor features a height-adjustable stand that allows for customized viewing angles, which is essential for reducing eye strain during long periods of use. Furthermore, the tilting screen enables users to find the most comfortable position, promoting better posture and overall well-being.

Philips also ensures comprehensive connectivity with a variety of input options, including VGA and DVI ports. This versatility allows users to easily connect the monitor to different devices, such as laptops, desktops, and gaming consoles, making it a practical choice for home and office setups alike.

In terms of additional features, the Philips 191EW9 boasts an integrated webcam and built-in speakers. This makes it an excellent choice for video conferencing, enabling seamless communication without the need for extra peripherals.

Overall, the Philips 191EW9 is an exceptional monitor that combines aesthetic appeal with advanced technology and versatility. Whether for work or play, it meets the demands of modern users who seek quality and efficiency in their display solutions.