CODING SYSTEMS CODING SYSTEMS CODING SYSTEMS. CHARACTERS CHARACTERS digits: 0 – 9 (numeric characters) letters: alphabetic characters punctuation marks:

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Presentation transcript:

CODING SYSTEMS CODING SYSTEMS CODING SYSTEMS

CHARACTERS CHARACTERS digits: 0 – 9 (numeric characters) letters: alphabetic characters punctuation marks: special characters CODING SYSTEMS

CODES CODES ASCII: American Standard Code for Information Interchange – commonest code – used to send information to and from microcomputers Originally used a 7-bit code An eight bit was added, this allowed an extra 128 characters to be represented Nowadays ASCII is an 8-bit code CODING SYSTEMS

EBCDIC Extended Binary Coded Decimal Interchange an 8-bit code this code allowed for international characters CODING SYSTEMS

Differences between ASCII and EBDIC characters D – P – 3 in both EBCDIC and ASCII CharacterDP3 EBCDIC ASCII CODING SYSTEMS