binary-coded decimal

noun

1. a number in binary code written in groups of four bits, each group representing one digit of the corresponding decimal number BCD

binary coded decimal

1. A code in which a string of four binary digits represents each decimal number 0 through 9 as a means of preventing calculation errors due to rounding and conversion. For example, since the binary equivalent of 3 is 0011 and the binary equivalent of 6 is 0110, 36 is represented as 0011 0110.