Columbia City, Indiana. Columbia City is a city in Columbia Township, Whitley County, in the U.S. state of Indiana. The population was 8,750 at the 2010 census. The city is the county seat of Whitley County.
Hence, hex digits are 0,1,2,3,4,5,6,7,8 and 9 A, B, C, D, E, F. This number system is the most commonly used in mathematics and information technologies. I.e. in html programming colors can be represented by a 6-digit hexadecimal number: FFFFFF represents white, 000000 represents black, and so on.
There are sixteen hex digits - 0 to 9, and A to F (which correspond to decimal values 10 to 15), and each hex digit represents exactly four bits. Exactly two hex digits represent a byte, which can have a value from 00 to FF (that is from 0 to 255 decimal).