數(shù)字電子技術(shù)課程設(shè)計(jì)說(shuō)明書(shū)-多功能數(shù)字鐘電路設(shè)計(jì)-wenkub
2023-06-21 19:28:22 本頁(yè)面
【正文】 術(shù)基礎(chǔ)知識(shí)、電子技術(shù)實(shí)驗(yàn)室、NE5574LS90、74LS47 段數(shù)碼管。秒脈沖輸入時(shí)間計(jì)數(shù)部分，計(jì)數(shù)部分由六個(gè)計(jì)數(shù)器組成，每?jī)蓚€(gè)分別計(jì)數(shù)秒、分和時(shí)。武漢理工大學(xué)《模擬電子技術(shù)》課程設(shè)計(jì)說(shuō)明書(shū) IIIAbstract The design is based on the pulse 555 timing produce multifunctional digital clock, can show, minutes and seconds on the clock, also can make the operation, the school also has the clock strike on the design. From 1KHZ 555 timing of pulse output by three series counter frequency respectively, 10HZ 100HZ 1HZ and the time pulse, including 1HZ pulse as seconds, 10HZ as input pulses at school input circuit. Seconds count part time input pulses, count by six counter position, every two seconds, and were counting. To counter the output lost 7 digital tube decoder, book to digital tube show time. When school work, blockade circuit, signal by the binary counter counts, convenient 10HZ given signal when the school. When points to count part when, is part of binary counter to carry signals, a binary signals drive the speaker, arrive the strike.武漢理工大學(xué)《模擬電子技術(shù)》課程設(shè)計(jì)說(shuō)明書(shū)目錄 ...............................................................................................................................1多功能數(shù)字鐘 ...............................................................................................................2 任務(wù) ..........................................................................................................................................要求 .......................................................................................................................................2 基本要求 ...........................................................................................................................2 擴(kuò)展功能 ..........................................................................................................................2 數(shù)字鐘電路系統(tǒng)的組成原理框圖 ..........................................................................................2方案設(shè)計(jì)與選擇 ...........................................................................................................3 振蕩器的設(shè)計(jì) .........................................................................................................................3 振蕩器的選擇 ....................................................................................................................3 參數(shù)確定 ............................................................................................................................4 分頻設(shè)計(jì) .................................................................................................................................5 時(shí)分秒計(jì)數(shù)器的設(shè)計(jì) .............................................................................................................5 時(shí)計(jì)數(shù)部分設(shè)計(jì) ..............................................................................................................6
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