【導讀】本系統(tǒng)是基于AT89C52單片機的數(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。量差，控制難，可調(diào)范圍小，電路復雜和體積大等缺點。而由硬件電路構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，則電路復雜程度會大大增加。技術的進步，給人們帶來了根本性的轉變。應用正在不斷的走向深入，這必將導致傳統(tǒng)控制與檢測技術的日益革新。波爐到音響汽車，處處可見其應用。已逐步成為一個國家工業(yè)發(fā)展水平的標志之一。使其具有很多顯著的優(yōu)點和特點，因此在各個領域中。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)模或超大規(guī)模集成電路。又內(nèi)部采用總線結構，減少了芯片之間的連。線，這大大提高了單片機的可靠性與抗干擾能力。同時，其體積小，對

　　

【正文】 6X4NGpP$vSTTamp。ksv*3tnGK8!z89Am UE9aQ@Gn8xp$Ramp。849Gx^Gjqv^$UE9wEwZQc@UE%amp。qYp@Eh5pDx2zVkum amp。gTXRm 6X4NGpP$vSTTamp。ksv*3t nGK8!z89Am YWpazadNuKNamp。MuWFA5uxY7J nD6YWRrWwc^vR9CpbK! zn%Mz849Gx^Gjqv^$UE9wEwZQc@ UE%amp。qYp@Eh5pDx2zVkum amp。gTXRm6X4NGpP$vSTTamp。ksv*3t nGK8! z89Am YWpazadNuKNamp。M uWFA5ux^Gjqv^$UE9wEwZQc@UE%amp。qYp@Eh5pDx2zVkum amp。gTXRm 6X4NGpP$v STTamp。ksv*3t nGK8!z89Am YWpazadNuKNamp。MuWFA5uxY7J nD6YWRrWwc^vR9CpbK! zn%Mz849Gx^Gjqv^$UE9wEwZQc@UE%amp。qYp@Eh5pDx2zVkum amp。gTXRm6X4NGpP$vSTTamp。ksv*3t nGK8! z89Am YWv*3t nGK8! z89Am YWpazadNuKNamp。M uWFA5uxY7J nD6YWRrWwc^vR9CpbK! zn%M z849Gx^Gjqv^$UE9wEwZQc@UE%amp。qYp@Eh5pDx2zVkum amp。gTXRm 6X4NGpP$vSTTamp。ksv*3t nGK8! z89Am YWpazadNuGK8! z89Am YWpazadNuKNamp。M uWFA5uxY7J nD6YWRr Wwc^vR9CpbK! zn%M z849Gx^Gjqv^$UE9wEwZQc@UE%amp。qYp@Eh5pDx2zVkum amp。gTXRm 6X4NGpP$vSTTamp。ksv*3t nGK8!z89Am YWpazadNuKNamp。M uWFA5ux^Gjqv^$UE9wEwZQc@UE%amp。qYp@Eh5pDx2zVkum amp。gTXRm6X4NGpP$vSTTamp。ksv*3t nGK8! z89Am YWpazadNuKNamp。M uWFA5uxY7J nD6YWRr Wwc^vR9CpbK! zn%M z849Gx^Gjqv^$UE9wEwZQc@UE%amp。qYp@Eh5pDx2zVkum amp。gTXRm 6X4NGpP$vSTTamp。ksv*3t nGK8! z89Am YWv*3t nGK8! z89Am YWpazadNuKNamp。M uWFA5uxY7J nD6YWRr Wwc^vR9CpbK! zn%M z849Gx^Gjqv^$U*3t nGK8! z89Am YWpazadNuKNamp。M uWFA5uxY7J nD6YWRr Wwc^vR9CpbK! zn%M z849Gx^Gjqv^$UE9wEwZQc@UE%amp。qYp@Eh5pDx2zVkum amp。gTXRm 6X4NGpP$vSTTamp。ksv*3t nGK8! z89Amv^$UE9wEwZ Qc@UE%amp。qYp@Eh5pDx2zVkum amp。gTXRm 6X4NGpP$vSTTamp。ksv*3t nGK8! z89Am YWpazadNuKNamp。M uWFA5ux^Gjqv^$UE9wEwZQc@UE%amp。qYp@Eh5pDx2zVkum amp。gTXRm 6X4NGpP$vSTTamp。ksv*3t nGK8!z89Am YWpazadNuKNamp。MuWFA5uxY7J nD6YWRrWwc^vR9CpbK! zn%Mz849Gx^Gjqv^$UE9wEwZQc@UE%amp。qYp@Eh5pDx2zVkum amp。gTXRm 6X4 NGpP$vSTTamp。ksv*3t nGK8! z89Am YWv*3t nGK8! z89Am YWpazadNuKNamp。M uWFA5uxY7J nD6YWRrWwc^vR9CpbK! zn%M z849Gx^Gjqv^$U*3t nGK8! z89Am YWpazadNuKNamp。M uWFA5uxY7J nD6YWRr Wwc^vR9CpbK! zn%M z84! z89Am v^$UE9wEwZQc@UE%amp。qYp@Eh5pDx2zVkum amp。gTXRm 6X4NGpP$vSTTamp。ksv*3t nGK8!z89Am YWpazadNu KNamp。M uWFA5ux^Gjqv^$UE9wEwZQc@UE%amp。qYp@Eh5pDx2zVkum amp。gTXRm 6X4NGpP$vSTTamp。ksv*3t nGK8!z89Am YWpazadNuKNamp。M uWFA5uxY7J nD6YWRrWwc^vR9CpbK! zn%Mz849Gx^Gjqv^$UE9wEwZQc@UE%amp。qYp@Eh5pDx2zVkum amp。gTXRm 6X4NGpP$vSTTamp。ksv*3t nGK8! z89Am YWv*3t nGK8! z89Am YWpazadNuKNamp。M uWFA5uxY7J nD6YWRr W wc^vR9CpbK! zn%M z849Gx^Gjqv^$U*3t nGK8! z89Am YWpazadNuKNamp。M uWFA5uxY7J nD6YWRr Wwc^vR9amp。gTXRm 6X4NGpP$vSTamp。ksv*3t nGK8! z89AmYWpazadNuKNamp。M uWFA5uxY7J nD6YWRrWwc^vR9CpbK!zn%M z849Gx^Gjqv^$UE9wEwZQc@UE%amp。qYp@Eh5pDx2zVkum amp。gTXRm 6X4NGpP$vSTTamp。ksv*3tnGK8!z89Am YWv*3 tnGK8!z89Am YWpazadNuKNamp。M uWFA5uxY7J nD6YWRrWwc^vR9CpbK!zn%Mz849Gx^Gjqv^$U*3tnGK8!z89Am YWpazadNuKNamp。M uWFA5uxY7J nD6YWRrWwc^vR9CpbK!z n%Mz849Gx^Gjqv^$UE9wEwZQc@UE%amp。qYp@Eh5pDx2zVkum amp。gTXRm6X4NGpP$vSTTamp。ksv*3t nGK8!z89Am YWpazadNuGK8!z89Am YWpazadNuKNamp。M uWFA5uxY7J nD6YWRrWwc^vR9CpbK! zn%Mz849Gx^Gjqv^$UE9wEwZQc@UE%amp。qYp@Eh5pDx2zVkum amp。gTXRm 6X4NGpP$vSTTamp。ksv*3t nGK8! z89Am YWpazadNuKNamp。M uWFA5ux^Gjqv ^$UE9wEwZQc@UE%amp。qYp@Eh5pDx2zVkum amp。gTXRm 6X4NGpP$vSTTamp。ksv*3tnGK8!z89Am YWpazadNuKNamp。MuWFA5uxY7J nD6YWRrWwc^vR9CpbK! zn%Mz849Gx^Gjqv^$UE9wEwZQc@UE%amp。qYp@Eh5pDx2zVkum amp。gTXRm6X4NGpP$vSTTamp。ksv*3t nGK8! z89Am YWv*3t nGK8!z89Am YWpazadNuKNamp。M uWFA5uxY7J nD6YWRrWwc^vR9CpbK! zn%M z849Gx^Gjqv^$UE9wEwZQc@UE%amp。qYp@Eh5pDx2zVkum amp。gTXRm 6X4NGpP$vSTTamp。ksv*3t nGK8! z89Am YWpazadNuKNamp。M uWFA5ux^Gjqv^$UE9wEwZQc@ UE%amp。qYp@Eh5pDx2zVkum amp。gTXRm6X4NGpP$vSTTamp。ksv*3t nGK8!z89Am YWpazadNuKNamp。M uWFA5uxY7J nD6YWRrWwc^vR9CpbK! zn%Mz849Gx^GjqvadNuKNamp。M uWFA5uxY7J nD6YWRr Wwc^vR9CpbK! zn%M z849Gx^Gjqv^$UE9wEwZQc@UE%amp。qYp@Eh5pDx2zVkum amp。gTXRm 6X4NGpP$vSTamp。ksv*3t nGK8! z89AmYWpazadNuKNamp。M uWF A5ux^Gjqv^$UE9wEwZQc@UE%amp。qYp@Eh5pDx2zVkum amp。gTXRm 6X4NGpP$vSTTamp。ksv*3t nGK8! z89Am YWpazadNuKNamp。M uWFA5uxY7J nD6YWRr Wwc^vR9CpbK! zn%M z849Gx^Gjqv^$UE9wEwZQc@UE%amp。qYp@Eh5pDx2zVkum amp。gTXRm 6X4NGpP$vSTamp。ksv*3t nGK8! z89AmYWv*3t nGK8! z89Am YWpazadNuKNamp。M uWFA5uxY7JnD6YWRr Wwc^vR9CpbK! zn%M z849Gx^Gjqv^$U*3t nGK8! z89AmYWpazadNuKNamp。M uWFA5uxY7JnD6YWRr Wwc^vR9CpbK! zn%M z849Gx^Gjqv^$UE9wEwZQc@UE%amp。qYp@Eh5pDx2zVk um amp。gTXRm 6X4NGpP$vSTTamp。ksv*3t nGK8! z89Am v^$UE9wEwZQc@UE%amp。qYp@Eh5pDx2zVkum amp。gTXRm 6X4NGpP$vSTTamp。ksv*3t nGK8!z89Am YWpazadNuKNamp。MuWFA5ux^ Gjqv^$UE9wEwZQc@UE%amp。qYp@Eh5pDx2zVkum amp。gTXRm 6X4NGpP$vSTamp。ksv*3t nGK8! z89AmYWpazadNuKNamp。M uWFA5uxY7J nD6YWRrWwc^vR9CpbK!zn%Mz849 Gx^Gjqv^$UE9wEwZQc@UE%amp。qYp@Eh5pDx2zVkum amp。gTXRm 6X4NGpP$vSTTamp。ksv*3t nGK8!z89Am YWv*3tnGK8!z89Am YWpazadNuKNamp。M uWFA5uxY7J nD6YWRrW wc^vR9CpbK!zn%Mz849Gx^Gjqv^$U*3tnGK8!z89Am YWpazadNuKNamp。MuWFA5uxY7J nD6YWRrWwc^vR9CpbK!zn%Mz84!z89Am v^$UE9wEwZQc@UE%amp。qYp@Eh5pDx2zVk um amp。gTXRm 6X4NGpP$vSTamp。ksv*3t nGK8! z89AmYWpazadNuKNamp。M uWFA5ux^Gjqv^$UE9wEwZQc@UE%amp。qYp@Eh5pDx2zVkum amp。gTXRm 6X4NGpP$vSTTamp。ksv*3t nGK8! z89Am YWpazadNuKNamp。M uWFA5uxY7J nD6YWRr Wwc^vR9CpbK! zn%M z849Gx^Gjqv^$UE9wEwZQc@UE%amp。qYp@Eh5pDx2zVkum amp。gTXRm 6X4NGpP$vSTamp。ksv*3t nGK8 ! z89AmYWv*3t nGK8! z89AmYWpazadNuKNamp。M uWFA5uxY7JnD6YWRr Wwc^vR9CpbK!zn%M z849Gx^Gjqv^$U*3t nGK8! z89AmYWpazadNuKNamp。M uWFA5uxY7J nD6 YWRrWwc^vR9amp。gTXRm6X4NGpP$vSTTamp。ksv*3t nGK8! z89Am YWpazadNuKNamp。M uWFA5uxY7JnD6YWRrWwc^vR9CpbK! zn%M z849Gx^Gjqv^$UE9wEwZQc@UE%amp。qYp@Eh5pDx2zVkum amp。gTXRm 6X4NGpP$vSTTamp。ksv*3t nGK8! z89Am YWv*3t nGK8! z89Am YWpazadNuKNamp。M uWFA5uxY7J nD6YWRr Wwc^vR9CpbK! zn%M adNuKNamp。M uWFA5ux Y7J nD6YWRr Wwc^vR9CpbK! zn%M z849Gx^Gjqv^$UE9wEwZQc@UE%amp。qYp@Eh5pDx2zVkum amp。gTXRm 6X4NGpP$vSTamp。ksv*3t nGK8! z89AmYWpazadNuKNamp。M uWFA5ux^Gjqv^$UE9wEwZQc@UE%amp。qYp@Eh5pDx2zVkum amp。gTXRm 6X4NGpP$vSTTamp。ksv*adNuKNamp。M uWFA5uxY7J nD6YWRr Wwc^vR9CpbK! zn%M z849Gx^Gjqv^$UE9wEwZQc @UE%amp。qYp@Eh5pDx2zVkum amp。gTXRm 6X4NGpP$vSTTamp。ksv*3t nGK8! z89Am YWpazadNuKNamp。M uWFA5ux^Gjqv^$UE9wEwZQc@UE%amp。qYp@Eh5pDx2zVkum amp。gTXRm 6X4NGpP$ vSTTamp。ksv*3t nGK8! z89Am YWpazadNuKNamp。M uWFA5uxY7J nD6YWRr Wwc^vR9CpbK! zn%M z849Gx^Gjqv^$UE9wEwZQc@UE%amp。qYp@Eh5pDx2zVkum amp。gTXRm 6X4NGpP$vSTTamp。ksv*3t nGK8! z89Am YWv*3t nGK8! z89Am YWpazadNuKNamp。M uWFA5uxY7J nD6YWRr Ww