数字电压表



AD芯片：

采用8位串行A/D转换器ADC0832。

● 8位分辨率，逐次逼近型，基准电压为 5V

● 5V单电源供电

● 输入模拟信号电压范围为 0～5V

● 有两个可供选择的模拟输入通道



显示：

使用三个数码管。



显示范围：

0.00 － 5.10 （单位：V）



连接方式：



AD_CLK → P1.0

AD_DAT → P1.1

AD_CS → P3.4

模拟输入 → CH0

(AD_DAT = DO + DI)



ADC0832输出最大转换值＝FFH (255)

设定最大测量值＝5.1V

255X=5.1 X=0.02 即先乘2再除以100

（小数点放在第三位数码管）- Digital voltmeter

AD chip: Uses 8 serial A/D switch ADC0832. * 8 resolution,
gradually approaching, the datum voltage is 5V * the 5V single power
source power supply * input simulated signal voltage scope is 0 ~ 5V *
has two to be possible to supply the choice the analog input channel

Demonstrated: Uses three digital tubes.

Demonstrates the scope: 0.00 - 5.10 (unit: V)

Connection way:

AD_CLK -> P1.0 AD_DAT -> P1.1 AD_CS -> P3.4 analog input -> CH0
(AD_DAT = DO DI)

ADC0832 output biggest transformation value = FFH (255)
establishes greatest observed value = 5.1V 255X=5.1 X=0.02 namely
first to ride 2 to eliminate again by 100 (decimal point puts on third
digital tube)