The Cangjie input metho, often erroneously spelt Changjie input method, is a system by which Chinese characters may be entered into a computer by means of a standard keyboard. Invented in 1976 by Chu Bong-Foo, the method is named after Cangjie, the man historically attributed with the invention of the first writing system of China; the name was suggested by Chiang Wei-kuo, then Defence Minister of the Republic of China. Although the input method was initially based upon Traditional Chinese characters, it has since been revamped such that interoperability between Cangjie and the Simplified Chinese character set was made possible.