diff --git a/Geigerzaehler/main.c b/Geigerzaehler/main.c
index 22b8c5b..e4c63e2 100644
--- a/Geigerzaehler/main.c
+++ b/Geigerzaehler/main.c
@@ -10,41 +10,38 @@
  */ 
 #define F_CPU 16000000UL 				// Clock speed: 16 MHz	- Speed from onboard oscillator
 
-// Macros
-#define bit_get(p,m) ((p) & (m))
-#define bit_set(p,m) ((p) |= (m))
-#define bit_clear(p,m) ((p) &= ~(m))
-#define bit_flip(p,m) ((p) ^= (m))
-#define bit_write(c,p,m) (c ? bit_set(p,m) : bit_clear(p,m))
-#define BIT(x) (0x01 << (x))
-#define LONGBIT(x) ((unsigned long)0x00000001 << (x))
-
 // Imports
 #include <avr/io.h>
 #include <avr/interrupt.h>
 #include <stdint.h>
-#include <sys/types.h>
-#include <time.h>
 
 // Global variable declaration
 uint16_t boost_frequency = 2000;		// 2kHz frequency
 
-bool boost_enable	=	false;
-bool boost_highVoltage_nextHigh	=	true;
+uint8_t boost_enable	=	0;
+uint8_t boost_highVoltage_nextHigh	=	1;
 clock_t boost_highVoltage_nextTick	=	0;
 
-bool signalOutput_enable	=	false;
-bool signalOutput_nextHigh	=	true;
+// Todo [CRITICAL]: Clock does not exist! Use timer.
+
+uint8_t signalOutput_enable	=	0;
+uint8_t signalOutput_nextHigh	=	1;
 clock_t signalOutput_nextTick	=	0;
 
 
 int main()
 {
-    DDRD &= ~(1<<2); 					// Activate input PD2
-    DDRD &= ~(1<<3);					// Activate input PD3
-										
-	PORTD |= (1<<2);					// Enable pull-up-resistor D2
-	PORTD |= (1<<3);					// Enable pull-up-resistor D3
+	// Inputs
+    DDRD &= (0 << PORTD2);					// Activate input PD2
+    DDRD &= (0 << PORTD3);					// Activate input PD3						
+	//PORTD |= (1 << PORTD2);					// Enable pull-up-resistor D2
+	//PORTD |= (1 << PORTD3);					// Enable pull-up-resistor D3
+	// Todo [CRITICAL]: External pull-down resistors	10kOhm
+	
+	// Outputs
+	DDRD |= (1 << PORTD4);
+	DDRD |= (1 << PORTD5);
+	DDRD |= (1 << PORTD6);
 	
 	// Interrupt for INT0	Pin-D2	High-voltage check
     EICRA |= (0 << ISC01)|(1 << ISC00); // On at any edge		[Code: 01]
@@ -60,32 +57,32 @@ int main()
     while (1) 
     {
 		// HighVoltage boosting
-		if(boost_enable)
+		if(boost_enable == 1)
 		{
 			if(clock() >= boost_highVoltage_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(boost_highVoltage_nextHigh == 1)		// Set it high
 				{
-					bit_set(PD4, 1);
-					boost_highVoltage_nextHigh = false;	// Next is low
+					PORTD |= (1 << PORTD4);
+					boost_highVoltage_nextHigh = 0;	// Next is low
 				}
 				else  								// Set it low
 				{
-					bit_set(PD4, 0);
-					boost_highVoltage_nextHigh = true;	// Next is high
+					PORTD |= (0 << PORTD4);
+					boost_highVoltage_nextHigh = 1;	// Next is high
 				}
 				
 				// Calculate when next high/low should be set
-				boost_highVoltage_nextTick = clock() + F_CPU * 1/(boost_frequency/2)		// Half of time it should be high/low
+				boost_highVoltage_nextTick = clock() + F_CPU * 1/(boost_frequency/2);		// Half of time it should be high/low
 			}
 		}else
 		{
 			if(boost_highVoltage_nextTick > 0)		// If boosting is deactivated, but the nextTick was not reset yet
 			{
 				// Reset boost-state
-				bit_set(PD4, 0);
-				boost_highVoltage_nextHigh = true;
+				PORTD |= (0 << PORTD4);
+				boost_highVoltage_nextHigh = 1;
 				boost_highVoltage_nextTick = 0;
 			}
 		}
@@ -97,23 +94,23 @@ int main()
 			if(clock() >= signalOutput_nextTick)	// If we are on or after the tick it should be executed
 			{
 				// Set pin according to next exec
-				if(signalOutput_nextHigh)		// Set it high
+				if(signalOutput_nextHigh == 1)		// Set it high
 				{
-					bit_set(PD5, 1);
-					bit_set(PD6, 1);
-					signalOutput_nextHigh = false;	// Next is low
+					PORTD |= (1 << PORTD5);
+					PORTD |= (1 << PORTD6);
+					signalOutput_nextHigh = 0;	// Next is low
 				}
 				else  								// Set it low
 				{
-					bit_set(PD5, 0);
-					bit_set(PD6, 0);
-					signalOutput_nextHigh = true;	// Next is high
+					PORTD |= (0 << PORTD5);
+					PORTD |= (0 << PORTD6);
+					signalOutput_nextHigh = 1;	// Next is high
 					
-					signalOutput_enable = false;	// Disable signalOutput
+					signalOutput_enable = 0;	// Disable signalOutput
 				}
 				
 				// When the signal should stop
-				signalOutput_nextTick = clock() + F_CPU * 0.2 		// nextTick is in 0.2s
+				signalOutput_nextTick = clock() + F_CPU * 0.2; 		// nextTick is in 0.2s
 			}
 		}
     }
@@ -127,15 +124,15 @@ int main()
 // Handles:	Over/Below working voltage
 ISR(INT0_vect)
 {
-	if(PIND&0x20 == 0x00)	// Falling edge
+	if(!(PIND & (1 << PORTD2)))	// Falling edge
 	{	
 		// Below ~400V, activate booster
-		boost_enable = true;
+		boost_enable = 1;
 	}
 	else					// Rising edge
 	{
 		// Reached ~400V, deactivate booster
-		boost_enable = false;
+		boost_enable = 0;
 	}
 	
 	reti();		// Exit interrupt-handler
@@ -146,7 +143,7 @@ ISR(INT0_vect)
 ISR(INT1_vect)
 {
 	// Tick detected, signalOutput
-	signalOutput_enable = true;
+	signalOutput_enable = 1;
 	// Execute immediately
 	signalOutput_nextTick = 0;