A control character which is used to control various devices associated with computing or telecommunications systems, i.e., particularly the switching to on or off of the devices.; 一種用來控制各種與計算機系統(tǒng)或遠程通訊系統(tǒng)相連的設(shè)備的控制 字符,特別是控制這些設(shè)備的開與關(guān)等。