Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.
Encoding lookup table. Four-base code was used to represent each character. With a four-base code, 256 different characters including upper case A through Z, lower case a through z, numbers 0 through 9, punctuation marks and symbols on the keyboard are encoded.
