Code Converters

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CSL 202, Code Converters

• CEC

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Contents

• Features of Grey Code.
• Binary to Grey Code Conversion.
• Grey Code to Binary Conversion.
• Features of Excess 3 Code.
• BCD to Excess 3 Code Conversion.
• Code Conversion using IC 7483.

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Grey Code

Unit Distance Code
Reduces Switching Operations. Reduces Dynamic
Power Consumption.
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Binary to Grey Code Conversion
Grey Code Only one bit change between adjacent
numbers.
Binary Input
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Binary to Grey Code Conversion
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(No Transcript)
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Grey Code to Binary Conversion
Grey Code Input
Binary Output
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Grey Code to Binary Conversion
Truth Table
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Binary to Grey/Grey to Binary Code Conversion
with Mode Control

M 0 Binary to Grey Conversion M 1 Grey to
Binary Conversion
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Binary/Excess 3 Code Converter with Mode Control
Truth Tables
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(No Transcript)
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Excess 3 Code

• Non-weighted and self-complementary BCD code used
  to represent the decimal numbers.
• Uses different algorithm than normal non-biased
  BCD or binary positional number system.
• Codes 1111 and 0000 are never used for any
  decimal digit.
• Add 3 to the decimal digit.

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BCD to Excess 3 Code Conversion
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BCD to Excess 3 Code Conversion
XS3 Code BCD Number 3.
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BCD/Excess 3 Code Conversion using IC 7483

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Thank You