"digit" - key terms from Wikipedia

binary digit
check digit
checksum digit
correlation between digit ratio
digit
digit computed
digit day
digit fund
digit is stored
digit month
digit number
digit of the root
digit pairs
digit ratio
digit ratio research
digit span
digit string
digit subtraction
digit times
digit year
each digit
extra digit
final digit
first digit
five digit
hexadecimal digit
if the last digit
initial digit
last digit
last digit of a number
least significant digit
middle digit
most significant digit
next digit
next digit is incremented
ninth digit
octal digit
one digit
one digit describing the distance
only one digit
represents one digit
rightmost digit
second digit
second to fourth digit ratio
significant digit
significant digit of each key
significant digit radix
subtrahend digit
supplemented by a check digit
third digit