how do you type a Chinese Character in computer?
In Windows, there are so many tools to help you to type Chinese characters. Such as google pinyin, Microsoft pinyin IME(if you know pinyin of the Chinese characters), and so on. If you use Ubuntu, there are also many options, type the command to install scim sudo apt-get install scim scim-pinyin, or you can try iBus(I use it in linux): 

sudo apt-get install ibus ibus-clutter ibus-gtk ibus-gtk3 ibus-qt4 
sudo apt-get install ibus-pinyin


after you install them, enable or disable them by hitting Control + Space by default then you can type Chinese characters by Pinyin.