diff --git a/Geigerzaehler/main.c b/Geigerzaehler/main.c
index 82fd270..4b319b6 100644
--- a/Geigerzaehler/main.c
+++ b/Geigerzaehler/main.c
@@ -45,11 +45,11 @@ int main()
 	PORTD |= (1<<3);					// Enable pull-up-resistor Pin-D3
 	
 	// Interrupt for INT0	Pin-D2	High-voltage check
-    EICRA |= (0 << ISC01)|(1 << ISC00); // Only at any edge		[0|1]
+    EICRA |= (0 << ISC01)|(1 << ISC00); // Only at any edge		[Code: 01]
     EIMSK |= (1 << INT0);				// Activate Interrupt INT0
     
 	// Interrupt for INT1	Pin-D3	Counter-click
-    EICRA |= (1 << ISC11)|(1 << ISC10);	// Only at rising edge		[1|1]
+    EICRA |= (1 << ISC11)|(1 << ISC10);	// Only at rising edge	[Code: 11]
     EIMSK |= (1 <<INT1);				// Activate Interrupt INT1
 	
     sei();		// Activate global interrupts
@@ -95,21 +95,21 @@ int main()
 			if(currTick >= signal_Output_nextTick)	// If we are on or after the tick it should be executed
 			{
 				// Set pin according to next exec
-				if(boost_highVoltage_nextHigh)		// Set it high
+				if(signal_Output_nextHigh)		// Set it high
 				{
 					bit_set(PD5, 1);
 					bit_set(PD6, 1);
-					boost_highVoltage_nextHigh = false;	// Next is low
+					signal_Output_nextHigh = false;	// Next is low
 				}
 				else  								// Set it low
 				{
 					bit_set(PD5, 0);
 					bit_set(PD6, 0);
-					boost_highVoltage_nextHigh = true;	// Next is high
+					signal_Output_nextHigh = true;	// Next is high
 				}
 				
 				// When the signal should stop
-				boost_highVoltage_nextTick = currTick + 101		// Todo: Add calculation for PWM high/low time
+				signal_Output_nextTick = currTick + 101		// Todo: Add calculation for signalOutput low time
 			}
 		}
     }
@@ -119,7 +119,8 @@ int main()
  * Interrupt-handler
  * ISR - Interrupt service routine
  */
-// Address: 0x001	INT0
+// Address: 0x001	INT0	-	Only at any edge	[Code: 01]
+// Handles:	Over/Below working voltage
 ISR(INT0_vect)
 {
 	if(PIND&0x20 == 0x00)	// Falling edge
@@ -136,11 +137,14 @@ ISR(INT0_vect)
 	reti();		// Exit interrupt-handler
 }
 
-
+// Address: 0x002	INT1	-	Only at rising edge	[Code: 11]
+// Handles:	Counter tube "tick"
 ISR(INT1_vect)
 {
 	// Tick detected, signalOutput
 	enable_signalOutput = true;
+	// Execute immediately
+	signal_Output_nextTick = 0;
 	
 	reti();		// Exit interrupt-handler
 }
diff --git a/README.md b/README.md
new file mode 100644
index 0000000..5338905
--- /dev/null
+++ b/README.md
@@ -0,0 +1,6 @@
+## School project - Geiger counter based on a Geiger-Müller counter tube
+
+Microcontroller code written in C
+
+Microcontroller: AtMega328P<br>
+Board: Arduino Nano
\ No newline at end of file