Member Avatar for can_surmeli

Hello.

I was wondering if any of you know a good online resource for the subject, principles of logic design.

My final is coming & so an online source that could guide me with good explanations or demonstrations and etc would be really nice.

Any ideas?

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  • Latest Post Latest Post by griswolf

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A short, practical follow-up to and : simple web searches often produce book listings, so here is a compact, exam-focused set of free online materials and a study workflow that match "principles of logic design."

Good free material to look for (by name rather than book-only searches): university lecture notes / OpenCourseWare on computation structures or digital logic; the Nand2Tetris project for bottom-up understanding of gates-to-processor; interactive simulators such as Logisim (desktop) and CircuitVerse (web) to build and test circuits; focused tutorials on Karnaugh maps and the Quine-McCluskey method; and collections of past exam problems from university course pages. Adding keywords like "lecture notes", "slides", "simulator", or "tutorial" (and "free") to searches tends to surface these resources rather than commercial textbooks.

A focused exam study flow:

  1. Refresh boolean algebra and De Morgan rules; practice reductions by hand.
  2. Master Karnaugh maps (4 variables by inspection, 5–6 variable strategies or QM for more).
  3. Build canonical combinational blocks: adders, multiplexers, decoders, encoders, comparators.
  4. Sequential-design sequence: state diagram -> state table -> choose encoding -> derive next-state/output equations -> implement with chosen flip-flop.
  5. Simulate each design and test with exhaustive or representative vectors.

Key exam/troubleshooting tips: assume D flip-flops when none are specified (they map next-state functions directly), always handle don't-care conditions to simplify, check for static hazards in combinational logic and add consensus terms if needed, and verify active-high/active-low conventions and asynchronous resets. For last-minute review, implement and simulate a full adder, a 4-bit counter, and a small FSM (for example, a sequence detector) to run through the full design cycle.

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Member Avatar for can_surmeli

I did that griswolf.

It only brings up book suggestions. I need an online resource.

Member Avatar for griswolf

I just scanned quickly and saw a pdf at about item 3... which on closer examination turned out to be an excerpt: Preface and index. Sorry.

However if you add "Free" to the query, you will find at least something, though it took me about 10 minutes to cut through the underbrush.

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