Arithmetic Logic Unit (ALU)

• Perform both arithmetic and logic operations

1-Bit ALU

• Logic
  • Selects AND or OR depending on then control
  • NAND and NOR are from A-Invert and B-Invert
    • Because of reverse DeMorgan’s laws
  • Basic Implementation:
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• Add Adders, Multipliers, and Divider (with a mux to select between them)
• Final Result
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32-Bit ALU

• Made by chaining many 1-bit ALUs
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• Final interface
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