【正文】 一、 評語（根據(jù)學生答辯情況及其論文質(zhì)量綜合寫出）： 二、評分（按下表要求綜合評定）： 評分項目 （分值） 答辯情況 論文質(zhì)量 合計（ 100分） 表達情況 （ 15 分） 回答問題情況（ 25 分） 規(guī)范要求與文字表達（ 20 分） 學術(shù)（或技術(shù)水平 ）（ 40 分） 得分 答辯小組長簽字： 年 月 日 畢業(yè)答辯說明 答辯前，答辯小組應(yīng)詳細審閱每個學生的畢業(yè)設(shè)計（論文），為答辯做好準備；并根據(jù)畢業(yè)設(shè)計（論文）質(zhì)量給出分數(shù)。如今，伴隨著這篇畢業(yè)論文的最終成稿， 復(fù)雜的心情煙消云散，自己甚至還有一點成就感。這時需要在一次執(zhí)行自動布線：“ Auto Route”（自動布線）選“ All”（全部），打開“ Autorouter Setup”對話框中的“ Route All”按鈕，即完成自動布線。 （ 3） 數(shù)字電路部分與模擬電路部分盡可能分開。 元件也可以自行設(shè)計，調(diào)用自行設(shè)計的元件時必須裝載自定義的元件庫。 執(zhí)行菜單命令【 Report】 /【 Bill of Material】。 2） 直接單擊鼠標右鍵，在浮動菜單上選擇“ Place Part”。 (4) 提供 ERC(電氣規(guī)則檢查 )和 DRC(設(shè)計規(guī)則檢查 )，最大限度地減少設(shè)計 (5) 庫元件的管理、編輯功能完善，操作非常方便。三維 CAD 系統(tǒng)在產(chǎn)品的零件造型、裝配造型和焊接設(shè)計、模具設(shè)計、電極設(shè)計、鈑金 設(shè)計等方面提供了強大的功能，真實感顯示、曲面造型的功能 關(guān)鍵詞： Protel 99 設(shè)計 5 Abstract CAD Computer Aided Design (Computer Aided Design, CAD), the concept and connotation are constantly developing. With the popularity of CAD technology application of CAD technology is toward openness, integration, intelligence and standardization. is the direction of the development of CAD engineering technical personnel to the puter as the tool, to product and engineering design, drawing, modeling, analysis and writing on the floorboard of the technical documents and other design activities. Protel 99 software is widely used in electronic circuit design, puter aided design system based on puter hardware and software as the basic platform, heritage and reference to predecessors in the circuit, logic and graph theory and topology optimization theory, the latest scientific and technological achievements, multidisciplinary in the development of electronic circuits and systems, using the puter to carry on the design, analysis, simulation, manufacturing, the rapid development of puter technology, puter aided design software for its perfect functions and convenient circuit applied to win more and more designers and teachers and students of colleges, is the electronic engineers to design electronic39。s righthand man. People use their professional knowledge for product drawing, analysis and calculation, and write technical documents and other design. Now, it is widely used in machinery, electronics, automotive, aerospace, mold, instruments, light industry and other manufacturing industries. Parts 3 d CAD system in the product modeling, assembly and welding modelling design, mold design, the respect such as electrode design, sheet metal design provides a powerful features, reality show, the function of surface modeling Keywords: Protel 99 design 6 目錄 摘要 .................................................................................................. II Abstract ............................................................................................ II 1 主板原理圖的設(shè)計 ........................................................................ 1 ： Protel 99 SE 的系統(tǒng)組成 ............................................................. 1 ： CAD 的特點及應(yīng)用 ....................................