1. Draw state machine models of the control software for:
   - an automatic washing machine wich has different programs for 
     different types of clothes;
   - a compact disc player.

2. Try developing a simple model using Petri Nets, 
   such as a traffic light control.

3. Draw state machine models that recognize UK Post Codes.

4. Draw state machine that represents the simple ant algorithm.

   "Suppose we have a grid divided into patches. Each patch may 
   hold zero or more wood chips. Ants move around the grid 
   following a few basic rules: 
	- Move in a random adjacent patch.
	- If the destination grid square contains any wood chips 
          and the ant is not carrying anything, then the ant picks 
          up a wood chip.
	- If the destination grid square contains any wood chips 
	  and the ant is carrying a wood chip, then the ant drops 
	  the wood chip".