diff --git a/ES/Lab/Lab10/ADC.c b/ES/Lab/Lab10/ADC.c
index 2cc0067..f09b698 100644
--- a/ES/Lab/Lab10/ADC.c
+++ b/ES/Lab/Lab10/ADC.c
@@ -1,5 +1,7 @@
 #include <LPC17xx.h>
 
+unsigned long result, y; // global variable for ADC result
+
 int main(){
 	LPC_PINCON -> PINSEL3 = 3 << 28; // P1.30 function 3
 	LPC_SC -> PCONP = 1 << 12; // power control
@@ -15,6 +17,6 @@ int main(){
 
 void ADC_IRQHandler(void)
 {
-		unsigned long Result;
-    Result = (LPC_ADC -> ADGDR & (0xFFF << 4)) >> 4 ;  // Read 12-bit ADC result
+    result = (LPC_ADC -> ADGDR & (0xFFF << 4) >> 4 );  // Read 12-bit ADC result
+	  y  = (LPC_ADC -> ADDR4 & (0xFFF << 4) >> 4); // Done bit reset
 }