4-bit adder modified

src/de1_add4_structure.vhd

@@ -92,6 +92,13 @@ BEGIN
 
   operand_b : binto7segment
     PORT MAP (                    -- fill in the missing components here ...
+      bin_i      => b,
+      segments_o => HEX0);
+
+  sum_output : binto7segment
+    PORT MAP (
+      bin_i      => sum,
+      segments_o => HEX0);