diff --git a/Teensy_Continuity_Tester/Matrix_Decoder_3p2.ino b/Teensy_Continuity_Tester/Matrix_Decoder_3p2.ino
index 1657e00..c624c75 100644
--- a/Teensy_Continuity_Tester/Matrix_Decoder_3p2.ino
+++ b/Teensy_Continuity_Tester/Matrix_Decoder_3p2.ino
@@ -1,5 +1,14 @@
-//
-// This software is in the public domain.
+/*
+   Licensed under the Apache License, Version 2.0 (the "License");
+   you may not use this file except in compliance with the License.
+   You may obtain a copy of the License at
+       http://www.apache.org/licenses/LICENSE-2.0
+   Unless required by applicable law or agreed to in writing, software
+   distributed under the License is distributed on an "AS IS" BASIS,
+   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+   See the License for the specific language governing permissions and
+   limitations under the License.
+*/
 // It will determine how a laptop keyboard matrix is wired using a Teensy 3.2 on an FPC daughterboard.
 // Open an editor on a computer and load or create a file that lists every key
 // on the laptop keyboard that will be tested. Connect the FPC cable of the test keyboard 
@@ -25,7 +34,7 @@
 // Load an array with the Teensy 3.2 I/O numbers that correspond to FPC pins 1 thru 34.
  int con_pin[] = {23, 0, 22, 1, 21, 2, 20, 3, 19, 4, 18, 5, 17, 6, 24, 7, 25, 8, 33, 9, 26, 10, 27, 11, 28, 12, 32, 31, 30, 29, 16, 15, 14, 13};
 //
-// Define maximum and minimum pin numbers that will be tested. If pin 34 is used by the keyboard, you must unsolder the Teensy LED.
+// Define maximum and minimum pin numbers that will be tested.
 // max_pin is usually set to the FPC connector size. min_pin is usually set to 1. The routine will start testing at pin 1 and go up to the max pin size.
 // The max and min pin values can be adjusted to exclude testing the FPC traces at the edges if they are reported as shorted. An example would be if pin 1
 // and pin 34 are both grounds. They will be reported as tied together but they are not needed by the key matrix. In this case, set the 
diff --git a/Teensy_Continuity_Tester/Matrix_Decoder_LC.ino b/Teensy_Continuity_Tester/Matrix_Decoder_LC.ino
index 6d56e3e..11c5cae 100644
--- a/Teensy_Continuity_Tester/Matrix_Decoder_LC.ino
+++ b/Teensy_Continuity_Tester/Matrix_Decoder_LC.ino
@@ -1,5 +1,14 @@
-//
-// This software is in the public domain.
+/*
+   Licensed under the Apache License, Version 2.0 (the "License");
+   you may not use this file except in compliance with the License.
+   You may obtain a copy of the License at
+       http://www.apache.org/licenses/LICENSE-2.0
+   Unless required by applicable law or agreed to in writing, software
+   distributed under the License is distributed on an "AS IS" BASIS,
+   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+   See the License for the specific language governing permissions and
+   limitations under the License.
+*/
 // It will determine how a laptop keyboard matrix is wired using a Teensy LC on an FPC daughterboard.
 // Open an editor on a computer and load or create a file that lists every key
 // on the laptop keyboard that will be tested. Connect the FPC cable of the test keyboard