【正文】 esToPointsSelectionParagraphFormatLineSpacingLinesToPoctionParagraSelec III 目錄 第一章 引言 ............................................ 1 第二章 可行性分析 ...................................... 3 .................................. 3 ................................... 3 ................................... 4 ................................... 5 .................................... 5 、必要性、項目的由來 ........... 5 ............................... 7 .................................. 15 第三章 需求分析 ....................................... 18 ....................................... 22 ....................................... 22 ......................................... 23 第四章 系統(tǒng)設計 ....................................... 25 ................................... 25 ....................................... 25 SelectionParagraphFormatLineSpacingLinesToPointsSelectionParagraphFormatLineSpacingLinesToPointselectionParagraaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaphFormatLineSpacingLinesToPointsSelectionParagraphFormatLineSpacingLinesTSelectionParbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbagraphFoLineSpacingLinesToPointsSelectionParagraphFormatLineSpacingLinesToPointse11111111111111111111111111111111lectionParagraphFormatLineSpacingLinesToPointsSelectionParagraphFormatLineSpacingLinesToPoctionParagraphFormatLineSpaci2222222222222222222222ngLinesToPoints2SelectionParagraphFormatLineSpacingLinesToPointsSelectionParagraphFormatLineSpacingLinesToPointselectionParagraphFccccccccccccccccccccccccccccccccccccccccccccccccccccccccormatLineSpacingLinesToPointsSelectionParagraphFormatLineSpacingLinesToPoctionParagraSelec SelectionParagraphFormatLineSpacingLinesToPointsSelectionParagraphFormatLineSpacingLinesToPointselectionParagraaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaphFormatLineSpacingLinesToPointsSelectionParagraphFormatLineSpacingLinesTSelectionParbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbagraphFoLineSpacingLinesToPointsSelectionParagraphFormatLineSpacingLinesToPointse11111111111111111111111111111111lectionParagraphFormatLineSpacingLinesToPointsSelectionParagraphFormatLineSpacingLinesToPoctionParagraphFormatLineSpaci2222222222222222222222ngLinesToPoints2SelectionParagraphFormatLineSpacingLinesToPointsSelectionParagraphFormatLineSpacingLinesToPointselectionParagraphFccccccccccccccccccccccccccccccccccccccccccccccccccccccccormatLineSpacingLinesToPointsSelectionParagraphFormatLineSpacingLinesToPoctionParagraSelec IV ....................................... 29 ..................................... 31 .................................... 31 計 .................................... 31 第五章 系統(tǒng)實施 ....................................... 34 ............................... 34 .......................... 34 。 ........................ 35 分塊實現(xiàn)方法 .................................... 35 編程方法 ........................................ 36 第六章 總結 ........................................... 38 本文總結 ........................................ 38 發(fā)展展望 ........................................ 38 致謝 ................................................... 41 參考文獻 ............................................... 42 SelectionParagraphFormatLineSpacingLinesToPointsSelectionParagraphFormatLineSpacingLinesToPointselectionParagraaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaphFormatLineSpacingLinesToPointsSelectionParagraphFormatLineSpacingLinesTSelectionParbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbagraphFoLineSpacingLinesToPointsSelectionParagraphFormatLineSpacingLinesToPointse11111111111111111111111111111111lectionParagraphFormatLineSpacingLinesToPointsSelectionParagraphFormatLineSpacingLinesToPoctionParagraphFormatLineSpaci2222222222222222222222ngLinesToPoints2SelectionParagraphFormatLineSpacingLinesToPointsSelectionParagraphFormatLineSpacingLinesToPointselectionParagraphFccccccccccccccccccccccccccccccccccccccccccccccccccccccccormatLineSpacingLinesToPointsSelectionParagraphFormatLineSpacingLinesToPoctionParagraSelec SelectionParagraphFormatLineSpacingLinesToPointsSelectionParagraphFormatLineSpacingLinesToPointselectionParagraaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaphFormatLineSpacingLinesToPointsSelectionParagraphFormatLineSpacingLinesTSelectionParbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbagraphFoLineSpacingLinesToPointsSelectionParagraphFormatLineSpacingLinesToPointse11111111111111111111111111111111lectionParagraphFormatLineSpacingLinesToPointsSelectionParagraphFormatLineSpacingLinesToPoctionParagraphFormatLineSpaci2222222222222222222222ngLinesToPoints2SelectionParagraphFormatLineSpacingLinesToPointsSelectionParagraphFormatLineSpacingLinesToPointselectionParagraphFccccccccccccccccccccccccccccccccccccccccccccccccccccccccormatLineSpacingLinesToPointsSelectionParagraphFormatLineSpacingLinesToPoctionParagraSelec 1 第一章 引言 在當今科學技術高度發(fā)達的現(xiàn)代化社會里，事物間的聯(lián)系日趨復雜，出現(xiàn)了各式各樣的多種大系統(tǒng)。且這些系統(tǒng)通常都是開放性系統(tǒng)，它們與所處的環(huán)境即更大的系統(tǒng)發(fā)生著物質、能量和信息等的交換關系。系統(tǒng)同環(huán)境的不適應將對系統(tǒng)的存在產(chǎn)生不利影響，這是系統(tǒng)的外部條件要求。從系統(tǒng)內(nèi)部看，它們通常由許多層次的分系統(tǒng)組成。系統(tǒng)與分系統(tǒng)之間有著縱橫交叉的復雜關 系。但是不管這些關系如何復雜，有一條基本原則是不變的，那就是下層系統(tǒng)以達到上層系統(tǒng)的目標為任務，橫向各分系統(tǒng)必須用系統(tǒng)總目標協(xié)調行動，各附屬分系統(tǒng)要為實現(xiàn)系統(tǒng)整體目標而存在。因此，任何分系統(tǒng)的不適應或不健全，都將對系統(tǒng)的整體功能和目標產(chǎn)生不利影響。系統(tǒng)本身的功能和目標是否合理也有研究分析之必要。不明確、不恰當?shù)南到y(tǒng)目標和功能設計，往往會給系統(tǒng)的生存帶來嚴重后果。這就是系統(tǒng)分析的重要性所在。為了發(fā)揮系統(tǒng)的功能及達到系統(tǒng)的目標，而就效益與費用兩種觀點，運用邏輯的方法對系統(tǒng)加以周詳?shù)姆治?、比較、考察和試驗，而制訂 一套經(jīng)濟有效的處理步驟或程序，或提出對原有系統(tǒng)改進方案的過程，被稱為系統(tǒng)分析。 系統(tǒng)設計的基礎是由系統(tǒng)分析提供的，系統(tǒng)設計的任務就是充分利用和發(fā)揮系統(tǒng)分析的成果，并把這些成果具體化和結構化。所謂系統(tǒng)設計就是在系統(tǒng)分析的基礎上，用系統(tǒng)思想綜合運用各有關學科的知SelectionParagraphFormatLineSpacingLinesToPointsSelectionParagraphFormatLineSpacingLinesToPointselectionParagraaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaphFormatLineSpacingLinesToPointsSelectionParagraphFormatLineSpacingLinesTSelectionParbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbagraphFoLineSpacingLinesToPointsSelectionParagraphFormatLineSpacingLinesToPointse11111111111111111111111111111111lectionParagraphFormatLineSpacin