M projects/02/FullAdder.hdl → projects/02/FullAdder.hdl

@@ -13,5 +13,7 @@ OUT sum,     // Right bit of a + b + c
         carry;   // Left bit of a + b + c
 
     PARTS:
-    // Put you code here:
-}+    HalfAdder(a=a, b=b, sum=sum1, carry=carry1);
+    HalfAdder(a=sum1, b=c, sum=sum, carry=carry2);
+    Xor(a=carry1, b=carry2, out=carry);
+}

M projects/02/HalfAdder.hdl → projects/02/HalfAdder.hdl

@@ -13,5 +13,6 @@ 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);
 }

A projects/02/PROGRESS.md

@@ -0,0 +1,12 @@ 
+
+# Progress
+
+## TODO
+Add16
+ALU
+FullAdder
+Inc16
+
+## DONE
+HalfAdder
+