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Unicode is a character encoding standard that has widespread acceptance. Microsoft software uses Unicode at its core. Whether you realize it or not, you are using Unicode already! Basically, âcomputers just deal with numbers. They store letters and other characters by assigning a number for each one.
It depends how the characters are being stored. In programming, each character is probably stored as an ASCII character, which means it takes 8 bits (1 byte) and gives you 256 possible characters. Unicode, on the other hand, I think uses 16 bits (2 bytes) and gives you 65536 characters.