無線局域網(wǎng)-計算機畢業(yè)論文外文翻譯-在線瀏覽
2025-08-07 06:57本頁面
【正文】 同步打??；實現(xiàn)菜單無紙化操作；后臺經(jīng)理查詢；倉庫進銷存管理等。 功能強大的點餐系統(tǒng)除支持一般的單機和局域網(wǎng)應用之外，還支持總店/分店多級架構(gòu)的遠程聯(lián)網(wǎng)應用于分店使用POS系統(tǒng)實現(xiàn)前臺銷售收銀、即時打印銷售小票、銷售日結(jié)、上報銷售數(shù)據(jù)和接收新菜品信息等功能。2) 無線PDA點菜模式：它利用了無線WiFi技術，通過PDA顯示點菜界面，使用觸摸筆完成點菜過程，真正實現(xiàn)隨時隨地點菜實時響應，這種模式適用于菜式和做法較為簡單的西餐廳、特色菜館和特具情調(diào)的中高級餐廳等。 附件2：外文原文WLANWhy use WLANFor one of the main local area network management, for the laying of cables, or check the cable is disconnected this timeconsuming work, it is easy to upset, not easy to break in a short time to find out where. Furthermore, for the business and application environment constantly updating and development of enterprise network must be matched with the original relayout, need to reinstall the network lines, although the cable itself is not expensive, but requested the technical staff to the high cost of wiring, especially the old building, wiring project costs even higher. Therefore, the construction of wireless local area network has bee the best solution.What conditions need to use WLAN WLAN is not limited to alternative local area network, but to make up for lack of wired local area networks, in order to achieve the purpose of extending the network, the following circumstances may have wireless local area network.l no fixed workplace usersl wired local area network set up by the environmental constraintsl As a wired local area network backup systemWLAN access technologyCurrently manufacturers in the design of wireless local area network products, there are quite a variety of access design methods can be divided into three categories: narrowband microwave, spread spectrum (Spread Spectrum) technology, and infrared have their advantages and disadvantages, limitations, and more, followed by detailed discussion of these techniques. (Infrared) technology, each technique has their advantages and disadvantages, limitations, and more, followed by detailed discussion of these techniques.Technical requirementsAs wireless local area network needs to support highspeed, burst data services, need to be addressed in the indoor use of multipath fading, as well as issues such as crosstalk subnets. Specifically, wireless local area network must achieve the following technical requirements:1) Reliability: Wireless LAN system packet loss rate should be lower than 105, the error rate should be lower than 108.2) Compatibility: For indoor use of wireless local area network, so as far as possible with the existing wired LAN network operating system and network software patible. 3) Data rate: In order to meet the needs of local area network traffic, wireless LAN data transfer rate
物理相關推薦
鄂ICP備17016276號-1