diff --git a/Geigerzaehler/main.c b/Geigerzaehler/main.c
index dcb034d..4d47105 100644
--- a/Geigerzaehler/main.c
+++ b/Geigerzaehler/main.c
@@ -1,6 +1,4 @@
 /*
- * geigerzaehler.main.c.c
- *
  * Created			:	28.02.2019 09:07:22
  * Author			:	John Ditgens, Alexander Brandscheidt
  * Git-Repository	:	https://gitea.Railduction.eu/JohnD/Geigerzaehler.git
@@ -13,6 +11,10 @@
 // Imports
 #include <avr/io.h>
 #include <avr/interrupt.h>
+#include <stdint.h>
+
+// Global variable declaration
+uint8_t 
 
 int main(void)
 {
@@ -22,10 +24,12 @@ int main(void)
 	PORTD |= (1<<2);					// Enable Pull Up Resistor Pin D2
 	PORTD |= (1<<3);					// Enable Pull Up Resistor Pin D3
 	
-    EICRA |= (1 << ISC01)|(1 << ISC00); // Only at raising edge
+	// Interrupt for INT0	Pin-D2	High-voltage check
+    EICRA |= (1 << ISC01)|(0 << ISC00); // Only at falling edge		[1|0]
     EIMSK |= (1 << INT0);				// Activate Interrupt INT0
     
-    EICRA |= (1 << ISC11)|(1 << ISC10);	// Only at raising edge
+	// Interrupt for INT1	Pin-D3	Counter-click
+    EICRA |= (1 << ISC11)|(1 << ISC10);	// Only at rising edge		[1|1]
     EIMSK |= (1 <<INT1);				// Activate Interrupt INT1
 	
     sei();		// Activate global interrupts
@@ -36,14 +40,21 @@ int main(void)
     }
 }
 
-ISR(INT0_vect) 							
+/*
+ * Interrupt-handler
+ * ISR - Interrupt service routine
+ */
+// Address: 0x001	INT0
+ISR(INT0_vect)
 {
 
+	reti();		// Exit interrupt-handler
 }
 
 
 ISR(INT1_vect)
 {
-	//???
+	
+	reti();		// Exit interrupt-handler
 }
-
+1
\ No newline at end of file