This book has the purpose of providing materials that can be utilized to learners of Visual C # language. I picked up the belt conveyor line of a factory as a subject, and I described how to make the program in detail. With simple logic, it is interesting that we can simulate the logic on PC, and is useful to extend the ability. If you add your own logic, it can expand to a more practical one. This description has been written using Visual C # of Visual Studio 2010 Express. This book is written as a teaching material for university.