data pcs 中文意思是什麼
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Fieldbus is a kind of communication network which is a whole digitial communication multi _ embranchment data bus between intelligential field device and auto _ system. control system based on pcs ( fieldbus control system ) is a new kind of system which connect field control unit, field monitor unit, operation unit, communication interface uint with databus. lt integrates computer technology, communication technology and process cnotrol technology to adjust to demand of high standard productive control and enterprise management. lt developments and follows the advantage of traditional instrument control system and computer central control system and make up for their disadvantage so that it is applied in different industrial cnotrol area
現場總線是連接智能現場設備和自動化系統的數字式、雙向傳輸、多分支的通信網路。它是一種能支持雙向、多節點、總線式的全數字通信網路。基於現場總線技術的控制系統是一種新型的控制系統，它採用總線方式將現場控制單元、現場監視單元、操作站、通信介面單元連接起來，綜合了計算機技術、通信技術和過程式控制制技術，以適應現代高水平生產控制與企業管理的需要。 -
On the internet, multimedia services such as streaming media, video / audio conference, voice over ip and video on demand, become more and more important, end - to - end data transmission or unicast ca n ' t be competent for the task which have the characteristic of one - to - many transmission. if we use unicast, the server has to offer the packet with same context for each connection, which will consume too much bandwidth. then the broadcast is alternative selection for us to deliver data in the lan, as we known, when broadcast technology used, all the pcs in the lan will receive the broadcast packets regardless that you would like to or not
點對點傳輸的單播方式不能適應此業務的傳輸特性（單點發送多點接收） ，這使得服務器必須為每一個接收者提供一個相同內容的ip報文拷貝，並在網路上重復地傳輸相同內容的報文，這必然佔用大量網路資源。雖然ip廣播允許一個主機把一個1p報文發送給同一個網路的所有主機，但是由於不一定是所有的主機都需要這些報文，這又可能浪費大量網路資源。 -
Data express removable hard drive enclosure for pcs, workstations, and servers
適用於pc工作站和服務器的data express可脫卸式硬盤機箱 -
Plc is widely used in automatic control for its strong function, high reliability, wide applicability, modular structure and etc. many customer services, such as showing process - flow charts, displaying dynamic - data - base interfaces, editing tables, generating charts, managing production and etc, can be provided by connecting personal computers ( pcs ) to a plc network. in a plc - pc system, plcs, which serves as the low - level units, are used to collect and control the data, ( for example, the on / off quantities and analog input / output quantities )
把個人計算機連入plc網路可以向用戶提供諸如工藝流程圖顯示、動態數據畫面顯示、報表編制、趨勢圖生成、窗口技術以及生產管理等多種功能，作為底層單元的plc完成對現場開關量、模擬輸入輸出量的控制處理，而利用微型計算機良好的人機對話界面和數據處理功能，實現對一臺或多臺plc進行監控，充分發揮plc可靠、靈活的控制性能和計算機在管理、監控等方面的優勢，提高控制系統的整體自動化程度。 -
On top of its conventional activities of signal magnification, reshaping, filtering, sampling, a / d transformation and scale switching, the intelligent sensor system can perform kinds of advanced operations such as on - line storage of parameters, real - time data processing, self - diagnosing of the system and so on. because of its communication interface with pcs, it serves as intelligent plug & play network sensor
它除了能完成對傳感敏感器件的信號進行放大、整形、濾波、采樣、 a d變換及標度變換外，還可實現參數在線存儲、數據實時處理、系統自我診斷等功能，並可以通過其通訊介面與溫室現場總線相接，組成即插即拔的智能網路傳感節點。 -
Ethernet maps the two lowest layers of osi model ( seven - layer module ) : data link layer and physical layer and divides them to some function sublayers including pcs ( physical coding sublayer ), pma ( physical medium attachment ) and pmd ( physical medium depend ) in physical layer. in these sublayers, logical link control ( llc ) is implemented through operation system, nic driver software and medium access control ( mac ) and the physical layer below it are implemented by the nic
以太網對應了osi開放系統模型（ 7層網路模型）的最下兩層：數據鏈路層和物理層，並將其細分為一些功能子層，包括數據鏈路層的llc （邏輯鏈路控制）子層和mac （介質訪問控制）子層，物理層的pcs （物理編碼子層） 、 pma （物理介質附加子層）和pmd廈門大學碩士學位論文摘要（物理介質相關于層） 。 -
This card largely depends on three integrate chips to fulfill its function : 1 ) nic control main chip, corresponding the mac sublayer of ethernet, to realize csma / cd media access protocol, manage the sending and receiving buffers integrated on the chip and provide motherboard pci interface. 2 ) serdes ( serializing and deserializing ) chip, corresponding pcs and pma sublayers in ethernet, mainly to complete 8b / 10b coding and convert 10 bits parallel data to serial data, and convert them again at the receiving end. 3 ) fibre transceiver unit, completing light - electrical conversion of seri
該網卡主要由3塊集成的晶元完成其功能，分別是i ）網路控制主晶元，對應于以太網的mac子層，主要完成csmaicd介質訪問協議，管理片上集成的發送和接收緩沖區，並提供和主板p0總線的介面： b ） s rd s （串列解串列化器）晶元，對應于以太同的pcs和pma子層，主要完成sb lob編碼並將10位并行的數據轉換為串列數據，在接收端完成相反的功能：涌）光纖收發器，完成串列數據的光電轉換功能。 -
Reconstruction via iteration is used for fault data recovery in this thesis. iterative reconstruction is a process of sliding the measure to pcs along the direction of fault
本文採用了迭代重構法進行數據恢復，迭代重構就是沿著故障方向，逐步逼近主成分子空間的過程。 -
The high - speed data communication based on pci bus between the two pcs is discussed in two aspects ( hardware and software ) in the paper
本文從硬體和軟體兩個方面對基於pci總線的pc機高速數據通信進行了研究。 -
This system can acquire and process a lot of different data from wide ranges. as single - chip microcomputers, cplds and pcs are connected into groups and run in parallel mode in this distributed system, it avoid the limitation of functions caused by their single run and acquires / process data in cooperation and high rate
在這種分散式組成模式中，單片微機、 cpld和pc微機以群集方式組合，以并行方式運行工作，克服了它們單獨運行時功能有限的缺點，協同高速地完成大容量數據採集和調控，不亞于由大中型計算機構成的系統。 -
Discussing the design project of the trial system of digital array radar. and discussing the simulation pci adapter ' s hardware realization on details. in the design the low voltage differential signaling ( lvds ) was designed to transfer data from pcs to the dsp system
（ 4 ）數字雷達試驗平臺模擬數據產生源的設計和具體硬體實現：完成了基於pci總線介面和低壓差分信號（ lvds ）傳輸線的模擬數據產生源試驗。 -
The pcs - tl30 supports data - transfer rates of up to 2 mb s over ip networks h. 323, making high - quality videoconferencing possible
Pcs - tl30支援高達2mbps的ip h . 323數據傳輸速度，從而能夠實配高品質的視頻會議 -
It is an important direction to store data in a distributed server system, which is composed by several high - performance pcs connected by the high - speed lan and managed by the distributed operating system
其中一個重要的發展方向是將多臺高性能的pc服務器通過高速局域網連接，在分散式并行操作系統的協調管理下構成分散式并行服務器來存儲數據。 -
By a practical engineering, this paper is about research & design job of industrial field lans based on the siamtic sinec, siemens corp. the author constructed a rudiment of pcs, which was the abbreviation for fieldbus control system, by using fieldbus technology, and accomplished the data communication between operating stations and field equipments
本文主要的工作是通過一個實際的項目，進行了基於西門子公司simaticsinec工業現場通信網路的研究與設計。作者採用目前日益流行的現場總線技術，構建了新一代fcs （現場總線控制系統）的雛形，實現了現場設備和操作站之間的數據交換，為企業建設cims乃至企業全面的信息化打下了堅實的基礎。 -
Pcs encompasses cordless phones, cellular mobile phone, paging systems, personal communications networks, wireless office phones and any other wireless telecommunications systems that allow people to place and receive voice / data calls while away from home and office
Pcs包括無繩電話、移動電話、尋呼系統、個人通訊網路、無線辦公電話和所有其他無線電訊系統，可使人們離家或辦公室外出時發送和接收音頻/數據。 -
Important developments in hong kong ' s telecommunications sector in 1997 included the launching of personal communications services ( pcs ), and the licensing of competitive international virtual private network services and international simple resale services for facsimile and data
年內，本港電訊業的重大發展計有：推出個人通訊服務、為富競爭性的國際虛擬專用網路服務，以及傳真及數據國際簡單分銷服務簽發牌照。 -
When using the optional pcsa - dsm1 data solution module, which is neatly integrated into the rear of the unit, the sony pcs - tl30 is capable of sending or receiving any image that can be displayed on a pc presentation data in native xga resolution during a video conference. and because the pcsa - dsm1 is equipped with an rgb out connector, presentation data from the pcs - tl30 can be enlarged by connecting the unit to equipment such as a projector or a large display
使用選購的pcsa - dsm1資料分享器模組時，該模組整地集成在設備的後部， pcs - tl30能夠在視頻會議中，以xga解析度，發送或接收pc機上所能夠顯示的任何圖像會議報告數據.而由於pcsa - dsm1配備rgb輸出介面，因為可以將系統與投影機或大屏幕顯示屏等設置連接起來，放大pcs - tl30輸出的會場報告數據 -
Tdma cellular pcs - authentication, encryption of signaling information user data, and privacy
Tdma蜂窩pcs .信令信息用戶數據和隱私的鑒別和加密 -
This used spare processing capacity on ordinary pcs to sift through radio - telescope data for signs of extraterrestrial intelligence
這個程序使用了普通電腦上空閑的處理能力，以在無線電天文望遠鏡的資料中進行篩選，從而找到外星智能的跡象。 -
A successful, well - known project in grid computing is seti @ home, the search for extraterrestrial intelligence program, which used the idle cpu cycles of a million home pcs via screen savers to analyze radio telescope data
網格計算的一個成功的、眾所周知的項目是seti @ home ，即搜索外星智慧的項目，它使用了大約一百萬臺家用pc在屏保時的空閑cpu周期來分析無線電天文望遠鏡的數據。
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