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Hierarchical ALU Design

Description

An interactive hierarchical tree showing how an 8-bit calculator system decomposes into modules — from the top-level system down to gate-level primitives. Click any module to select it, expand/collapse its children, and view detailed information in the side panel including key points, inputs/outputs, and examples.

Learning Objectives

Bloom Level: Understand (L2)

  • Identify the hierarchical levels in a digital system design
  • Explain how datapath and control unit separation simplifies design
  • Describe how complex systems are built from simple, reusable modules

How to Use

  1. Click any module to select it and see details in the right panel
  2. Click parent nodes to expand or collapse their children
  3. The blue path highlights the ancestor chain from selected node to root
  4. On mobile, tap a node to see its tooltip; details appear below the tree

Key Concepts

  • Hierarchy manages complexity by decomposing systems into modules
  • Each module has a well-defined interface and single responsibility
  • Leaf modules (Half Adder, gates) are simple enough to design directly
  • Integration assembles tested modules structurally

References

  • Unit 13: System Integration and Hierarchical Design