"digit" - key terms from Wikipedia

check digit
checksum digit
correlation between digit	ratio
digit
digit	day
digit	fund
digit	group
digit	group separator
digit	month
digit	number
digit	numbers
digit	pairs
digit	ratio
digit	span
digit	subtraction
digit	year
each digit
extra digit
fifth digit
final digit
first digit
five digit
four digit
hexadecimal digit
hundreds digit	of their score
if the last digit
initial digit
last digit
last digit	of a number
leading digit
least significant digit
left most digit
middle digit
most significant digit
next digit	is incremented
ninth digit
octal digit
one digit	describing the distance
only one digit
quotient digit
right most digit
rightmost digit
root digit
second digit
significant digit
significant digit	of each key
supplemented by a check digit
take the last digit
third digit
twice the last digit