diff --git a/src/Wire.cpp b/src/Wire.cpp
new file mode 100644
index 0000000..62a2ba4
--- /dev/null
+++ b/src/Wire.cpp
@@ -0,0 +1,39 @@
+#include "Wire.h"
+
+Wire::Wire(int number, bool io, string inName)
+{
+	WireNumber = number;
+	isPrint = io;
+	name = inName;
+	value = -1;
+	lastEvent = 0;
+	history.insert(history.begin(), 60, -1);
+}
+
+int Wire::getValue(int time) const
+{
+	for (auto i = history.begin() + time; i != history.begin(); i--) {
+		if (i[0] != -1) {
+			return i[0];
+		}
+	}
+	return -1;
+}
+
+void Wire::setValue(int newValue, int setTime)
+{
+	history[setTime] = newValue;
+	if (lastEvent < setTime) {
+		lastEvent = setTime;
+	}
+}
+
+int Wire::getNumber() const
+{
+	return wireNumber;
+}
+
+void Wire::addGate(Gate * newGate)
+{
+	gates.push_back(newGate);
+}
diff --git a/src/Wire.h b/src/Wire.h
new file mode 100644
index 0000000..0829e15
--- /dev/null
+++ b/src/Wire.h
@@ -0,0 +1,30 @@
+#ifndef WIRE
+#define WIRE
+
+#include <vector>
+#include <queue>
+#include <string>
+
+using namespace std;
+
+class Gate;
+
+class Wire {
+	public:
+		Wire(int number, bool io, string inName = "");
+
+		int getValue(int time) const;
+		void setValue(int newValue, int setTime);
+
+		int getNumber() const;
+		void addGate(Gate* newGate);
+
+	private:
+		int wireNumber, value, lastEvent;
+		vector<int> history;
+		string name;
+		bool isPrint;
+		vector<Gate*> gates;
+};
+
+#endif // !WIRE
diff --git a/src/XnorGate.cpp b/src/XnorGate.cpp
new file mode 100644
index 0000000..3155f6b
--- /dev/null
+++ b/src/XnorGate.cpp
@@ -0,0 +1,32 @@
+#include "XnorGate.h"
+
+using namespace std;
+
+XnorGate::XnorGate(int d, Wire* wire1, Wire* wire2, Wire* wire3) {
+	delay = d;
+	in1 = wire1;
+	in2 = wire2;
+	out = wire3;
+}
+
+void XnorGate::evaluate(int evTime) {
+	if (in1->getValue(evTime) != -1 && in2->getValue(evTime) != -1) {
+		if (in1->getValue(evTime) == in2->getValue(evTime)) {
+			if (out->getValue(evTime + delay) != 1) {
+				e->push(Event(e->size, 1, evTime + delay, out));
+				out->setValue(1, evTime + delay);
+			}
+		}
+		else {
+			if (out->getValue(evTime + delay) != 0) {
+				e->push(Event(e->size, 0, evTime + delay, out));
+				out->setValue(0, evTime + delay);
+			}
+		}
+	}
+}
+
+int XnorGate::getDelay()
+{
+	return delay;
+}
diff --git a/src/XnorGate.h b/src/XnorGate.h
new file mode 100644
index 0000000..2448b84
--- /dev/null
+++ b/src/XnorGate.h
@@ -0,0 +1,14 @@
+#ifndef XNOR
+#define XNOR
+#include "Gate.h"
+#include "Event.h"
+#include "Wire.h"
+
+class XnorGate : public Gate {
+	public:
+	XnorGate(int d, Wire* wire1, Wire* wire2, Wire* wire3);
+	void evaluate(int evTime);
+	int getDelay();
+};
+
+#endif // !XNOR
diff --git a/src/XorGate.cpp b/src/XorGate.cpp
new file mode 100644
index 0000000..9169df4
--- /dev/null
+++ b/src/XorGate.cpp
@@ -0,0 +1,32 @@
+#include "XorGate.h"
+
+using namespace std;
+
+XorGate::XorGate(int d, Wire* wire1, Wire* wire2, Wire* wire3) {
+	delay = d;
+	in1 = wire1;
+	in2 = wire2;
+	out = wire3;
+}
+
+void XorGate::evaluate(int evTime) {
+	if (in1->getValue(evTime) != -1 && in2->getValue(evTime) != -1) {
+		if (in1->getValue(evTime) != in2->getValue(evTime)) {
+			if (out->getValue(evTime + delay) != 1) {
+				e->push(Event(e->size, 1, evTime + delay, out));
+				out->setValue(1, evTime + delay);
+			}
+		}
+		else {
+			if (out->getValue(evTime + delay) != 0) {
+				e->push(Event(e->size, 0, evTime + delay, out));
+				out->setValue(0, evTime + delay);
+			}
+		}
+	}
+}
+
+int XorGate::getDelay()
+{
+	return delay;
+}
diff --git a/src/XorGate.h b/src/XorGate.h
new file mode 100644
index 0000000..cadeef4
--- /dev/null
+++ b/src/XorGate.h
@@ -0,0 +1,14 @@
+#ifndef XOR
+#define XOR
+#include "Gate.h"
+#include "Event.h"
+#include "Wire.h"
+
+class XorGate : public Gate {
+	public:
+	XorGate(int d, Wire* wire1, Wire* wire2, Wire* wire3);
+	void evaluate(int evTime);
+	int getDelay();
+};
+
+#endif // !XOR