need help about icl7135

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466576266

Joined Mar 17, 2010
10
hello, i am doing some work about the IC ICL7135. i use the MCU at89c51 to acquite data through pin21(BUSY) of the icl7135. and i have finished the c code. my problem is: i can get the data. but when i change the analog input ,the LED doesn't response, it still dispaly the previou value. i don't know what happened?
appreciate with your help!
 
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