基于Multism/protel的數字搶答器

電子機電論文編號:JD035    字數:9531,頁數:26

目錄

第一章    緒論.................................................................. 3
第二章    方案論證與比較 ........................................................7
第三章   總體設計思路........................................................... 8
        （一）設計任務與要求.................................................... 8
        （二）設計原理與參考電路................................................ 8
第四章   多功能硬件與軟件設計及其理論分析與計算................................ 12
        （一）搶答電路 .........................................................12
         (二)定時電路 ..........................................................12
        （三）報警電路 .........................................................13
        （四）時序控制電路..................................................... 18
        （五）整機電路設計 .....................................................19
第五章   實驗儀器設備.......................................................... 21
第六章   實驗內容及方法 ........................................................21
結束語 .........................................................................22
主要參考文獻 ...................................................................25
謝辭  ......................................................................... 26

摘  要    數字搶答器由主體電路與擴展電路組成。優先編碼電路、鎖存器、譯碼電路將參賽隊的輸入信號在顯示器上輸出；用控制電路和主持人開關啟動報警電路，以上兩部分組成主體電路。通過定時電路和譯碼電路將秒脈沖產生的信號在顯示器上輸出實現計時功能，構成擴展電路。經過布線、焊接、調試等工作后數字搶答器成形。關鍵字： 搶答電路 定時電路 報警電路 時序控制 

             The figure vies for the answering device by the subject circuit and expands the circuit to make up . Have priority in code circuit , latch , decipher circuit and export the input signal of the entrant team on the display; Starting the warning circuit with the control circuit and host's switch, two the above-mentioned parts make up the subject circuit. Through timing circuit and decipher second signal function while outputs and realizes counting on the displaying that pulse produce circuit, form and expand the circuit. Through connect up , weld , debug figure vie for answering device take shape after the work.

Key word： Vie for answering the circuit ， Timing circuit  ，Warning circuit ，   Time sequence controlling