EBCDIC (Extended Binary Coded Decimal Information Code) is an eight-bit character set that was developed by International Business Machines (IBM). It was the character set used on most computers manufactured by IBM prior to 1981.

EBCDIC is not used on the IBM PC and all subsequent "PC clones". These computer systems use ASCII as the primary character and symbol coding system. (Computer makers other than IBM used the ASCII system since its inception in the 1960s.)

EBCDIC is widely considered to be an obsolete coding system, but is still used in some equipment, mainly in order to allow for continued use of software written many years ago that expects an EBCDIC communication environment.

The EBCDIC code assignments are shown in the following table.