數(shù)字電路學習機的設計與實現(xiàn)畢業(yè)論文-全文預覽
【正文】 數(shù)碼管顯示模塊 22 555檢測電路模塊 22 時鐘與分頻電路模塊 22參考文獻 23致謝 24附件一： 25 30摘 要數(shù)字電路是一門電子技術(shù)專業(yè)的基礎課程，在基本概念和基本方法方面，邏輯代數(shù)基本定律、組合邏輯和時序邏輯的概念是分析和設計數(shù)字系統(tǒng)的基礎，也是設計大規(guī)模集成芯片的基礎，中、大規(guī)模集成電路已成為數(shù)字系統(tǒng)的主體，因此，數(shù)字電路學習機是一個不可或缺的學習工具。數(shù)碼管顯示電路是四位二進制BCD碼輸入顯示10進制數(shù)也可以調(diào)整為直驅(qū)數(shù)碼管也可以通過反相器使其變成共陽顯示?！娟P(guān)鍵詞】數(shù)字電路。數(shù)碼管顯示電路AbstractDigital circuit is a professional basic course of electronic technology, the basic concept and the basic method of logic algebra, basic law, binational logic and sequential logic concept is the analysis and design of digital system based, is also the design of largescale integrated chip based, in large scale integrated circuit, has bee the subject of digital system, therefore, digital circuit learning machine is an indispensable tool for learning.The learning machine includes five basic function modules, respectively is the power supply module, a logic level switch circuit and display circuit, digital display circuit, integrated digital IC testing circuit, 555 chip test circuit, a clock divider circuit with.Power module circuit and other modules to provide power. Digital tube display circuit is a four bit binary BCD code input display 10 hex numbers can also be adjusted for direct drive digital control can also be achieved through the inverter make it into a total display.In electronic technology experiment teaching process found in the digital circuit experiment box level indicator lamp cannot distinguish between a high level and a high input impedance, reason is the design be congenitally deficient. For the convenience of students on the experimental phenomenon of understanding, in the digital circuit experiment box interior space and the circuit board is allowed under the premise of the digital circuit experiment box, aiming at the existing problems, puts forward the improved method, the article expounds the improving scheme and related electrical schematic diagram. Improved digital circuit experiment box can indicate low level input, are able to distinguish between a high level and a high impedance input, improve the teaching effect.[ Key words ] digital circuit power supply clock divider 555 detection digital tube display circuit第1章 任務與要求數(shù)字電路實驗箱是進行《數(shù)字電子技術(shù)》課程學習必不可少的工具，為學生理解數(shù)字邏輯電平的概念、測試邏輯電路的功能、搭建簡單的數(shù)字電路等提供了有利的條件。（1）繪制系統(tǒng)組成框圖，確定設計方案。（5）提交畢業(yè)設計說明書。（3）基本功能模塊包括：邏輯電平開關(guān)電路、邏輯電平顯示電路、數(shù)碼管顯示電路、集成IC測試電路、555測試電路、時鐘與分頻電路。因此，本課題意在設計一款能夠滿足我?！稊?shù)字電子技術(shù)》課程改革需求的、價格實惠的多功能數(shù)字電路學習機。優(yōu)點：反應速度快，輸出紋波較??；工作噪聲低；缺點：體積大，重量
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