Logic Design

1
Logic Design
Logic design deals with the basic concepts and
tools used to design digital hardware consisting
of logic circuits
Digital devices airbags, auto-focus cameras,
aircraft navigators, cell phones, credit card
readers, digital cameras, DVD players, personal
computers, portable music players,
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Digital vs. Analog
Digital signal at any time can have one of a
finite set of possible values Analog signal can
have one of an infinite number of possible values
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Benefits of Digital

• Reliable storage (CD, DVD, )
• Compression (MP3, JPEG, )
• Reliable transmission (cell phones, digital TVs,
  )

Conversion from Analog to Digital Technology
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Digital Encodings and Binary Numbers
We can represent any digital data using only
binary digits (0 and 1), or bits.
ASCII encoding A 01000001
B 01000010
Why binary numbers?
Base ten decimal numbers (0,1,2,3,4,5,6,7,8,9) Ba
se two binary numbers (0,1) Base eight octal
numbers (0,1,2,3,4,5,6,7) Base sixteen
hexadecimal numbers (0,1,2,3,4,5,6,7,8,9,A,B,C,D,E
,F)