Introduction
  
    - Modern simulation programs
      
	- graphical user interface
 
	- large block libraries
 
	- basic handling almost identical
 
	
	- different modeling paradigms, e.g.
	  
	    - signal oriented (Simulink)
 
	    - physical modeling/Modelica (Dymola)
 
	  
	 
      
     
    - Discrete Modeling in Simulink and Modelica
      
	- basic features implemented
 
	
	- additional libraries for state machines and
	process based models
 
	- basic blocks look very similar,
	e.g. UnitDelay or Memory/Pre
 
      
     
    - Surprise
      
	- models can behave quite differently!
 
	
	- example: simulation of digital circuits
 
	- needs thorough understanding of internals