Lecture 5.pptx - ‫بسم الله الرحمن الرحيم‬ ‫‪1‬‬ ‫مقدمة ألكترونيات‬ Feb 2018 Chapter 2 NUMBER SYSTEMS

Lecture 5.pptx - ‫بسم الله الرحمن...

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1 ميحرلا نمحرلا هللا مسب
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Dr. Khalid M. Amin Chapter 2: NUMBER SYSTEMS, OPERATIONS, AND CODES (Part III) تاينورتكلأ ةمدقم Feb. 2018
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2.11 . Digital codes Gray code ASCII code Unicode 3
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Codes for Characters Also need to represent Characters as digital data. The ASCII code (American Standard Code for Information Interchange) is a 7-bit code for Character data. Typically 8 bits are actually used with the 8th bit being zero or used for error detection (parity checking). 8 bits = 1 Byte. ‘A’ = % 01000001 = $41 ‘&’ = % 00100110 = $26 7 bits can only represent 2 7 different values (128). This enough to represent the Latin alphabet (A-Z, a-z, 0-9, punctuation marks, some symbols like $), but what about other symbols or other languages?
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ASCII Codes for Characters ‘A’ = % 01000001 = $41 ‘&’ = % 00100110 = $26 7 bits can only represent 2 7 different values (128). This enough to represent the Latin alphabet (A-Z, a-z, 0-9, punctuation marks, some symbols like $), but what about other symbols or other languages?
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UNICODE UNICODE is a 16-bit code for representing alphanumeric data.
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