符ふ号ごう数すう字じMeanings1nounsign digitcomputing›Computing term for a digit that indicates the sign of a number, such as in signed-digit representations.符ふ号ごう数すう字じは、数すう値ちの正せい負ふを表あらわすために使つかわれる。A sign digit is used to indicate whether a number is positive or negative.