【導(dǎo)讀】本系統(tǒng)是基于AT89C52單片機(jī)的數(shù)字式低頻信號發(fā)生器。穩(wěn)壓電路、運放電路、按鍵和八位數(shù)碼管等。其設(shè)計簡單、性能優(yōu)良，可用于多種需要低頻信號源的場所，具有。目前，市場上常見的波。方波、三角等波形。電路便是可取的路徑之一，不用依靠單片機(jī)。量差，控制難，可調(diào)范圍小，電路復(fù)雜和體積大等缺點。而由硬件電路構(gòu)成的低頻信號其性能難以令人滿。一旦工作需求功能有增加，則電路復(fù)雜程度會大大增加。技術(shù)的進(jìn)步，給人們帶來了根本性的轉(zhuǎn)變。應(yīng)用正在不斷的走向深入，這必將導(dǎo)致傳統(tǒng)控制與檢測技術(shù)的日益革新。波爐到音響汽車，處處可見其應(yīng)用。已逐步成為一個國家工業(yè)發(fā)展水平的標(biāo)志之一。使其具有很多顯著的優(yōu)點和特點，因此在各個領(lǐng)域中。都得到了迅猛的發(fā)展。一塊芯片內(nèi),因而其性能很高,而價格卻相對較低廉,即性能價格比很高。規(guī)?；虺笠?guī)模集成電路。又內(nèi)部采用總線結(jié)構(gòu)，減少了芯片之間的連。線，這大大提高了單片機(jī)的可靠性與抗干擾能力。同時，其體積小，對

　　

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