文件名称:0809_5
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ad转换的C语言程序，硬件部分由AT89C51,MAX232，ADC0809，NF555组成，555用来产生ADC0809的CLK，
现在好像是300多K，输入电压直接加在ADC0809的IN0，因为我只用一路所以ADC0809的
A、B、C三个进址我直接接地。ADC0809的ALE和StartART我连在一起由单片机的P3.4控制。-ad conversion C-language program, the hardware part by AT89C51, MAX232, ADC0809, NF555 composition, 555 used to generate the ADC0809' s CLK, it seems that it more than 300 K, the input voltage directly added to the ADC0809' s IN0, because I only use all the way so ADC0809 The A, B, C three sites I went straight into the ground. ADC0809 of ALE and StartART I linked to the P3.4 controlled by the microcontroller.
现在好像是300多K，输入电压直接加在ADC0809的IN0，因为我只用一路所以ADC0809的
A、B、C三个进址我直接接地。ADC0809的ALE和StartART我连在一起由单片机的P3.4控制。-ad conversion C-language program, the hardware part by AT89C51, MAX232, ADC0809, NF555 composition, 555 used to generate the ADC0809' s CLK, it seems that it more than 300 K, the input voltage directly added to the ADC0809' s IN0, because I only use all the way so ADC0809 The A, B, C three sites I went straight into the ground. ADC0809 of ALE and StartART I linked to the P3.4 controlled by the microcontroller.
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0809_5.c