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TOPICS
• Information Representation
• Characters and Images
• Fundamentals of Digital Computer Design
Information Representation
• All information must be rendered into binary in order to be stored on a computer.
• Besides numbers, almost all applications must store characters and string information.
• Images are pervasive in today’s internet world and must be rendered in binary to be
handled by internet browsers.
Character Representation
• ASCII – PC workstations
• EBCDIC – IBM Mainframes
• Unicode – International Character sets
ASCII
• ASCII
• Expanded name
American Standard Code for Information Interchange
• Area covered
7-bit coded character set for information interchange
• Characteristics/description
Specifies coding of space and a set of 94 characters (letters, digits and punctuation or mathematical symbols) suitable for the interchange of basic English language
documents. Forms the basis for most computer code sets
ASCII