術語表

USB消除了「機殼恐懼症」-即在安裝附加週邊設備時不敢打開電腦機殼。在安裝新週

邊設備時,USB還消除了調整複雜IRQ設定值的麻煩。

使用USB即可避免「埠堵塞」。沒有USB,PC通常僅限使用一台印表機,兩個通訊埠 裝置(通常為滑鼠和數據機)、一個強化並列埠附件(如掃描器或視頻照相機)和一個 操縱桿。每日都有越來越多的多媒體電腦週邊設備導入市場。有了USB,同一台電腦上 同時可執行最多127件裝置。

USB許可「熱插入」。即無須關機,將附件插入,重新啟動,執行設定即可安裝週邊設 備。亦無須在拆除裝置時執行逆向過程。

要言之,USB將今天的「隨插即用」附件轉化成真正的插入即可用附件!

Hub(集線器)

一種通用並列匯流排裝置,它提供更多與USB的連接。

接線盒是USB插入即可用結構中的重要成份。下圖顯示了常見的集線器。集線器可以幫助用 戶簡化USB連接,以低成本簡單的方式達到堅固耐用的目的。

集線器是高密度的接線裝置,它發揮了USB的多頭連接特徵。連接點稱為埠。每個集線器都 將一個連接點轉換為多個連接點。該結構支援多個接線盒的並置。

集線器中的上游埠將集線器與主機連接。每一個下游埠與另一個集線器或裝置連接。集線器可 以在每一個下游埠檢測連接或拆除,使功率能夠分佈至下游裝置。每一個下游埠均可單獨啟 用,配置為全速或低速。集線器將低速埠與全速信號隔離開來。

集線器包括兩部份﹕集線器控制器和集線器轉發器。轉發器是上游埠和下游埠之間的協議控制 開關。它還擁有重設和暫停/恢復信號的硬體支援。控制器提供介面寄存器,允許與主機進行 雙向通訊。集線器特定狀態和控制命令允許主機配置集線器,並且追蹤和控制埠。

Device (裝置)

執行一項功能的邏輯或物理實體,其意義取決於上下文,在最低級別,裝置可能指單一硬體部 件,如內存裝置。在較高級別,裝置可能指執行某項功能的一組硬體部件,例如USB介面裝 置。在更高級別,裝置可能指通過USB連接的一個實體所執行的功能;例如,一台數據機/傳 真機裝置。裝置可以是物理、電、可編址和邏輯裝置。

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Philips 202P manual Hub(集線器), 一種通用並列匯流排裝置,它提供更多與usb的連接。

202P specifications

The Philips 202P is a versatile and highly regarded display model designed to meet the needs of both professional and casual users. This monitor combines advanced technologies with a user-friendly design, making it an excellent choice for a variety of applications, from office tasks to multimedia consumption.

One of the standout features of the Philips 202P is its impressive display quality. With a resolution of 1920 x 1080 pixels, it provides sharp and clear images, essential for detailed work and enjoyable media viewing. The monitor utilizes a Full HD panel that enhances color accuracy and ensures vibrant visuals, making it suitable for graphic design, video editing, and everyday computing tasks.

The monitor also boasts a wide viewing angle, thanks to its IPS (In-Plane Switching) technology. This feature allows users to view the screen from different positions without experiencing significant color distortion or brightness loss. As a result, it is ideal for collaborative work, where multiple people may need to see the screen simultaneously.

In terms of connectivity, the Philips 202P is equipped with standard ports, including HDMI and VGA inputs. This versatility allows users to connect various devices such as laptops, desktops, and gaming consoles with ease. The monitor's built-in speakers provide adequate audio for presentations and casual entertainment, eliminating the need for external speakers in many situations.

Ergonomics is another key focus of the Philips 202P. The monitor includes adjustable height, tilt, and swivel features, allowing users to customize their viewing experience according to their comfort needs. This promotes better posture and reduces strain during long periods of use, which is beneficial for both home and office environments.

Energy efficiency is a notable characteristic of the Philips 202P. The monitor meets energy-saving standards and incorporates technologies that reduce power consumption without compromising performance. This aligns with the growing demand for sustainable technology solutions.

Overall, the Philips 202P stands out due to its blend of advanced display technologies, ergonomic design, and energy-efficient features. It caters to a wide audience, from professionals needing reliable performance in demanding tasks to casual users enjoying multimedia content. With its comprehensive set of features, the Philips 202P remains a solid choice in the competitive market of computer monitors.