To write in Japanese on a computer, you will need to download a Japanese Input Method Editor (IME) that's compatible with your operating system. A quick search on Google should point you in the right direction.
There are several differences between Japanese Google and American Google. The main difference is that Japanese Google is written in Japanese, where as American Google is written in English.
If you're referring to how to make them on a computer, you'll need to download a Japanese Input Method Editor appropriate for your operating system. Try searching the internet for "Japanese IME." Google has one you may download for free.
*sigh*
Input Magazine was created in 1984.
Sky Input was created in 2004.
On Google if you go to the right of the search box and click on Preferences you can change the language to Japanese.
Why dont you type it in google translate?! EDIT: Google translate is terrible with Japanese, that's why, lazy person.
You will need to download a Japanese Input Method Editor in order to type in Japanese.
Intelligent Input Bus was created in 2008.
Turning Japanese was created in 1980.
You will need to download software enabling your operating system to display these characters. If you wish to type in Chinese/Japanese, you'll need to download an 'Input Method Editor' appropriate for your OS. A quick search on Google should point you in the right direction.