搶答器課程設(shè)計說明書-在線瀏覽
2024-09-14 00:06本頁面
【正文】 .6 顯示驅(qū)動電路 ...............................................................6 八、心得體會...............................................................................7 九、參考文獻(xiàn)...............................................................................7一、設(shè)計目的、組裝與調(diào)試方法。 用數(shù)字顯示搶答倒計時間，由“9”倒計到“0”時，無人搶答，蜂鳴器連續(xù)響1秒。 (3)搶答器具有數(shù)據(jù)鎖存和顯示的功能。搶答選手的編號一直保持到主持人將系統(tǒng)清零為止。系統(tǒng)揚(yáng)聲器報警（音響持續(xù)1秒），并封鎖輸入編碼電路，禁止選手超時后搶答，時間顯示器顯示0三、進(jìn)度安排設(shè)計時間為兩周，第一周查資料、方案論證，完成數(shù)字搶答器電路設(shè)計，對元器件進(jìn)行篩選，第二周組裝、調(diào)試，進(jìn)行實物檢查、設(shè)計答辯并完成設(shè)計報告。關(guān)鍵字：PLC、搶答、報警、數(shù)顯英文摘要Abstract：This paper introduces a kind of adopting digital circuit made multifunction digital display responder, it mainly adopts the 74 series of mon integrated circuit, it not only has basic vies to answer first function, but also has the timing alarm function, and digital display function, when vies to answer first began, the system will automatically count down, and the time can be preset, someone vies to answer first words during the system will stop time, if no one during the contest, the system will have a short warning and prompt vies to answer first end key words： microputer PLC 、vi
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