Four-corner method: Difference between revisions

Revision as of 14:53, 3 January 2017

Revision as of 16:50, 19 September 2017

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[[File:four-corner method.svg|200px|right|thumb|The code of 法 ({{zh|p=fǎ}}; meaning "method/law/France") is an example of a fifth digit for an extra part: 3413₁ (丶十一丶_一).]]

The '''Four-Corner Method''' ({{zhCJKV|t=四角號碼檢字法|s=四角号码检字法|p=sì jiǎo hàomǎ jiǎnzì fǎ|l=four corner code lookup-character method|k=사각호마}}) is a [[Chinese input methods for computers|character-input method]] used for [[Character encoding|encoding]] [[Chinese character]]s into either a computer or a manual typewriter, using four or five [[numerical digit]]s per [[Character (computing)|character]]. The Four-Corner Method is also known as the '''Four-Corner System'''.

The four digits encode the shapes found in the four corners of the symbol, top-left to bottom-right. Although this does not uniquely identify a Chinese character, it leaves only a very short list of possibilities. A fifth digit can be added to describe an extra part above the bottom-right if necessary.