Solving Problem 4.25: Construct a 5-to-32-line decoder with 3-to-8 decoders and a 2-to-4 decoder.
Problem 4.25: Construct a 5-to-32-line decoder with four 3-to-8-line decoders with enable and a 2-to-4-line decoder. Use block diagrams to represent all components.
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In this video, we walk through "Problem 4.25" from the textbook "Digital Design with an Introduction to the Verilog HDL" by M. Morris Mano and Michael Ciletti (5th Edition).
The task is to build a "5-to-32 decoder" by combining smaller decoder blocks:
A "2-to-4 decoder" to control enables
Four "3-to-8 decoders" to generate outputs
A clean block diagram that shows how everything connects
This design illustrates the power of modular construction in digital systems — breaking down complex circuits into simpler, reusable components. You’ll also learn about hierarchical design practices, crucial in large-scale hardware development.
📘 Textbook Reference:
Digital Design with an Introduction to the Verilog HDL – 5th Edition
Problem 4.25
If you’re a student aiming to master decoder logic, digital circuit scalability, or preparing for an exam, this tutorial is made for you.
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