bug fixes to StateChangeDetection and ToneMelody examples

build/shared/examples/2.Digital/StateChangeDetection/StateChangeDetection.pde

@@ -16,7 +16,7 @@
    most Arduino boards)
  
  created  27 Sep 2005
- modified 30 Dec 2009
+ modified 14 Oct 2010
  by Tom Igoe
 
 This example code is in the public domain.
@@ -64,11 +64,11 @@ void loop() {
       // wend from on to off:
       Serial.println("off"); 
     }
-
-    // save the current state as the last state, 
-    //for next time through the loop
-    lastButtonState = buttonState;
   }
+  // save the current state as the last state, 
+  //for next time through the loop
+  lastButtonState = buttonState;
+
   
   // turns on the LED every four button pushes by 
   // checking the modulo of the button push counter.

build/shared/examples/2.Digital/toneMelody/toneMelody.pde

@@ -7,6 +7,7 @@
  * 8-ohm speaker on digital pin 8
  
  created 21 Jan 2010
+ modified 14 Oct 2010
  by Tom Igoe 
 
 This example code is in the public domain.
@@ -38,6 +39,8 @@ void setup() {
     // the note's duration + 30% seems to work well:
     int pauseBetweenNotes = noteDuration * 1.30;
     delay(pauseBetweenNotes);
+    // stop the tone playing:
+    noTone(8);
   }
 }