數(shù)字電子技術(shù)基礎(chǔ)課程設(shè)計(jì)報(bào)告-智力競(jìng)賽搶答器-全文預(yù)覽
【正文】 akerL4SpeakerDLED1DLED2DLED3DLED4..Res2..Res2.NOR4N1S.NOR4N1S.NOR4N1S.NOR4N1S 其工作原理如下： 當(dāng)主持人將開關(guān)撥至接通狀態(tài)時(shí)，這樣三極管處于截至狀態(tài)，使選手無法搶答，整個(gè)搶答器處于被鎖定狀態(tài)，當(dāng)主持人將開關(guān)斷開時(shí)，三極管的集電極接高電平，這樣三極管處于導(dǎo)通狀態(tài)，當(dāng)選手有搶答信號(hào)輸入時(shí)可以通過三極管將信號(hào)傳送給 D 觸發(fā)器，而 D 觸發(fā)器的 6 作用則是判斷選手的信號(hào)，并鎖住其他選手的 信號(hào)傳入。 此部分主要是詳細(xì)介紹該智力搶答器各個(gè)組成模塊，以及各模塊的器件組成以及相應(yīng)的功能。 綜上所述可知在本次設(shè)計(jì)的電路 中， RS 邊沿 D 觸發(fā)器有四個(gè)，其作用是用來鎖存非最先搶答者的搶答信號(hào)。 D 觸發(fā)器，其功能有： ⑴ D 觸發(fā)器具有接收并記憶信號(hào)的功能，又稱為鎖存器。 此次用 3 個(gè) JK 觸發(fā)器主要是構(gòu)成三位二進(jìn)制倒計(jì)時(shí)器計(jì)數(shù)器，其中前一個(gè) JK 觸發(fā)器的 Qn端接下一個(gè) JK 觸發(fā)器 CP 端。方案二的設(shè)計(jì)則是用一個(gè)數(shù)碼顯示器顯示搶答成功者的號(hào)碼，與第一個(gè)相比顯得不能讓人一下就反映過來誰是搶答成功者；另外方案一更加的簡(jiǎn)潔、易行，而且使用到的元器件也都是我們所常用到的一些元件比如： 555， 74LS148以及開關(guān) 二極管 電容 電的電路與方案二比較顯得更簡(jiǎn)單、明了。計(jì)分器通過譯碼器將信號(hào)傳送給一數(shù)碼管顯示出來。s society increasingly fierce petition, the selection of talent, selection, knowledge contest winners activities such as more frequent, and without vies to answer first. And now with digital device, intelligent vies to answer first the direction of development, and this will inevitably raise the cost of the contest. Now that the knowledge petition more and more small, simple operation, economical and practical small vies to answer first device will certainly market. This vies to answer first by using only very clever design and realize the digital digital chips. In knowledge responder petitions, especially when the topic, in doing vies to answer first vies to answer first process, in order to know what a group or a player to answer, you must have a system to plete this task. If only by the people in vies to answer first the vision is to figure out which group to answer. This design is to use several triggers and transistor clever design contest, above the problems were solved, even if the two groups of vies to answer first time, also can differ microseconds distinguish which group of priority. This paper introduces the working principle and the responder design, and its practical applications. The design of the quizzes responder, mainly consists of three parts: a few D flipflop is posed of a part, the responder used by several JK flipflop is used 74LS4511 and constitute part, another is down by two 74190 constitute a reversible counter JiFenQi, namely. 2 設(shè)計(jì) 以下是智力搶答器的原理框圖 以下是 智力搶答器的方案流程圖 方案一 圖 方案一流程圖 搶答器主要是由四個(gè)三極管、和四個(gè) D 觸發(fā)器以及四個(gè)或非門構(gòu)成，其中三極管是與主持人一起配合使用，用來控制是否開始搶答，當(dāng)主持人將開關(guān)接地時(shí)，三極管截至，此時(shí)三極管可以當(dāng)作一個(gè)二極管使用當(dāng)有選手搶答時(shí)就通過三極管將信號(hào)傳送給 D 觸發(fā)器， D 觸發(fā)搶答模塊 彩燈模塊聲響模塊時(shí)間模塊彩燈系
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