十亿位元 shíyìwèiyuán gigabit Origin Definitions Defs Strokes Stroke Words Sentences Sents 十亿 十億 shíyì numeral one billion one billion; giga-位元 wèiyuán bit a binary digit, which can be either 0 or 1; the smallest unit of data in computing (8 bits make up one byte); a single unit in a series of pulse signals, represented as a high or low voltage signal; see 比特 bǐtè for the Mainland China equivalent.