用于表示十靳制数的一种服进制编码的十进制码，其籽每位十靳制数用七位服进制数来差示，它那钢别是8,6,4,2,0,1和0的系数。
A binary-coded decimal code for representing decimal Numbers in which each decimal digit is represented by seven binary digits which are coefficients of8, 6, 4, 2, 0, 1, 0, respectively.
youdao