The quick way to do so is to to use the ALT key Hold it down while entering one of the codes below ä = 0228    Ä = 0196 ö = 0246    Ö = 0214 ü = 0252    Ü = 0220 ß = 0223 The more elegant way is to set you keyboard properties to German, here you will find a detailed instruction, how to do this. http://german.about.com/library/weekly/aa032398.html

On an Ipad , I think you have to hold the A key for something like a second. Not sure , about this at all. I know little about Apple products , i think they are overprieced and restrict my options (Hard-,Software as well as settings ) It´s like buying a car with a welded hood ( brit. bonnet ) The design is rather nice.

Switch on the German keyboard in PC.

可以找一下德语键盘图