diff --git a/Technology/SemaphoreDemo/.gitignore b/Technology/SemaphoreDemo/.gitignore
new file mode 100644
index 0000000..ae3c172
--- /dev/null
+++ b/Technology/SemaphoreDemo/.gitignore
@@ -0,0 +1 @@
+/bin/
diff --git a/Technology/SemaphoreDemo/src/ProCon.java b/Technology/SemaphoreDemo/src/ProCon.java
index f168a81..213c41c 100644
--- a/Technology/SemaphoreDemo/src/ProCon.java
+++ b/Technology/SemaphoreDemo/src/ProCon.java
@@ -1,5 +1,15 @@
-// java program to demonstrate 
-// use of semaphores Locks 
+// Karsten Jeppesen, UCN
+// 
+// java application to demonstrate 
+// use of semaphores (Locks)
+//
+// Semaphore methods:
+// acquire()
+//   will wait for semaphore to be in released state. Will set semaphore to acquired state
+// release()
+//   will release an acquired semaphore
+
+
 import java.util.concurrent.*; 
 
 //A shared resource/class. 
diff --git a/Technology/SemaphoreDemo/src/SemaphoreDemo.java b/Technology/SemaphoreDemo/src/SemaphoreDemo.java
index 7b05c13..3712c44 100644
--- a/Technology/SemaphoreDemo/src/SemaphoreDemo.java
+++ b/Technology/SemaphoreDemo/src/SemaphoreDemo.java
@@ -1,5 +1,8 @@
-// java program to demonstrate 
-// use of semaphores Locks 
+// Karsten Jeppesen, UCN
+// 
+// java application to demonstrate 
+// use of semaphores (Locks)
+
 import java.util.concurrent.*; 
 
 
@@ -14,9 +17,7 @@ public class SemaphoreDemo
 		// A 0 means that you are not allowed to read (as nobody has yet written to the buffer)
 		Semaphore semCon = new Semaphore(0);
 		
-		// creating two threads with name A and B 
-		// Note that thread A will increment the count 
-		// and thread B will decrement the count 
+		// creating two threads named "Producer" and "Consumer" 
 		MyThread mt1 = new MyThread(semPro, semCon, "Producer"); 
 		MyThread mt2 = new MyThread(semPro, semCon, "Consumer"); 
 		
diff --git a/Technology/ThreadsDemo/.gitignore b/Technology/ThreadsDemo/.gitignore
new file mode 100644
index 0000000..ae3c172
--- /dev/null
+++ b/Technology/ThreadsDemo/.gitignore
@@ -0,0 +1 @@
+/bin/