Generator class public functions 
 
 Additional functions inherited from
   Signal.
-   Generator(void); 
 -  Sets the name of the object to "Generator".
 -   ~Generator(); 
 -  Does nothing.
 -   void printConnections(int flag); 
 -  Used as a terminator for recursive printConnection() for
     Filters.  If flag is 2 or 3, then the printState function will be
     called.
 -   void printState(void); 
 -  Does nothing.  Can be defined in derived classes to print
     important information about the object.
 -   void tick(int newTickNumber); 
 -  If newTickNumber is different than the last tick number, then
     action() will be called and a new sample will be calculated; 
     otherwise, nothing happens.