diff --git a/projects/02/HalfAdder.hdl b/projects/02/HalfAdder.hdl
index 76217bd..6e96f8f 100644
--- a/projects/02/HalfAdder.hdl
+++ b/projects/02/HalfAdder.hdl
@@ -9,9 +9,10 @@
 
 CHIP HalfAdder {
     IN a, b;    // 1-bit inputs
-    OUT sum,    // Right bit of a + b 
+    OUT sum,    // Right bit of a + b
         carry;  // Left bit of a + b
 
     PARTS:
-    // Put you code here:
+    Xor(a=a, b=b, out=sum);
+    And(a=a, b=b, out=carry);
 }
diff --git a/projects/02/HalfAdder.out b/projects/02/HalfAdder.out
new file mode 100644
index 0000000..612c8e3
--- /dev/null
+++ b/projects/02/HalfAdder.out
@@ -0,0 +1,5 @@
+|   a   |   b   |  sum  | carry |
+|   0   |   0   |   0   |   0   |
+|   0   |   1   |   1   |   0   |
+|   1   |   0   |   1   |   0   |
+|   1   |   1   |   0   |   1   |