The George Washington University School of Engineering and Applied Science Department of Electrical

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The George Washington UniversitySchool of
Engineering and Applied ScienceDepartment of
Electrical and Computer Engineering

• ECE122 Lab5
• Adders Multiplexers

Jason Woytowich Ritu Bajpai October 6th, 2006
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Half-Adder

• Create a module that adds 2 bits together.

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Full-Adder

• Create a module that adds 3 bits together, using
  2 Half-Adders. Test and layout.

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Multiplexers

• A multiplexer has n select lines, 2n inputs and 1
  output.
• The number represented by the select lines
  chooses one of the inputs to be placed on the
  output.

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Multiplexers
X1
X2
O
X3
X4
S1
S2
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Home work

• Build and test a 2x1 multiplexer.
• Build a 4x1 multiplexer from your 2x1
  multiplexer.