EBCDIC (1 byte for each character)
stands for Extended Binary Coded Decimal Interchange Code, is commonly used in IBM mainframes
It is an 8-bit coding scheme that can represent 256 (28) characters
ASCII (1 byte for each character)
Stands for American Standard Code for Information Interchange, is most widely used binary code with non-IBM mainframes and virtually all microcomputers
It uses 7 bits for each character
It can also represent 128 (27) characters
Unicode
Was developed to deal with other languages rather than English and European languages
It uses 2 bytes (16 bits) for each character
It can handle 65,536 character combinations rather than just 256