For those of you who know Japanese, you will be familiar with Katakana. It is one of the three lettering systems that the Japanese use in their writings. Specifically, Katakana is used to spell out any foreign words. These can range from foreign names, like John or Charles, or any foreign words that has been incorporated into the language, such as computer or hotdog.
(Interestingly, Korean and Chinese words are not written in Katakana.)
I was wondering if anybody knew how this alphabet came about, or any of the other history behind it.