Systemsmith Address Components - Version 4.0 This control combines the required address logic of all 190 Universal Postal Union member countries in a single resizable ActiveX control. When used with the optional Systemsmith ZipData-US product, it provides auto-completion of zip code from city and state, or auto-completion of city and state from zip code. Because it's an OCX, you can add all this functionality without duplicating and maintaining the same code throughout all of your applications.