PCF8591AD.C PCF8591的AD转换实验.

/*芯片PCF8951共有四个A/D输入通道：AD0，AD1，AD2，AD3,分别与四个电位器(R1,R2,R3,R4)连接，用以调节电位器的输出电压。其中AD0通道既可测量电位器输出电压，也可用于测量从J1插座输入的外接电压，须用开关J2加以选择。J4插座提供由PCF8591输出的时钟方波信号。SAA1064驱动四个数码管显示一路AD转换后得到的数据-PCF8591AD.C PCF8591 of AD conversion experiment. /* Chip PCF8951 total of four A/D input channels: AD0, AD1, AD2, AD3, respectively, with four potentiometers (R1, R2, R3, R4) connected to regulate potentiometer output voltage. Which can measure AD0 channel potentiometer output voltage can also be used to measure the input from the J1 socket external voltage to be selected with the switch J2. J4 socket to provide the output from the PCF8591 when Zhongfang Bo signal. SAA1064 drive four digital display AD transformed the way the data obtained