SCM "220V Cooling Fan" There are two basic structure: a general-purpose microcomputer is widely used in the program memory and data memory combined structure of a memory space, called Princeton structure. Another is the program memory and data memory completely separate, each addressing structure, generally require larger program memory, the current monolithic "220V Cooling Fan" in order to use the program and data memory completely separate structure as much. Smart Fan configure peripherals, constitutes a programmable smart fan system, with small size, high reliability, and other characteristics. "220V Cooling Fan" is not only able to meet the necessary requirements and there are many features available for development, has a wide range of applications.