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Arithmetic Logic Unit (ALU)

CMPT 295

Nand2Tetris

Operational Diagram

!hack alu.png

Architectural Diagram

!alu architectural diagram.png

Inputs

• Input A (D-register)
• Input B (A-register/M-register)
• ALU Functions

Outputs

• Result
  • !300px-ALU_symbol.svg.png
• zr/ng
• Fed into D, A, M registers
  • Chosen depending on destination bit

References: