The synchronization or asynchronism transmission may be selected with sundry modes. 數據傳輸包括同步傳輸和異步傳輸。
A character inserted to fill a blank time slot in synchronous transmission, or inserted to fulfill a character-count requirement in transmissi ons of fixed block lengths. 為填滿(mǎn)同步傳輸中空時(shí)間間隙或為滿(mǎn)足在定長(cháng)塊傳輸中要求的字符計數而插入的一種字符。
