100. OCR A Level (H046-H446) SLR15 – 1.4 Karnaugh maps part 3

About this video

OCR Specification Reference
AS Level 1.4.3b
A Level 1.4.3b

In part three of a four part series, this video considers three-input Karnaugh maps and discusses the rules for binary headings for the variables in the map, how to draw boxes representing sub-expressions on the map and an approach to use those boxes to determine a simplified expression.

Key question:

- How can Karnaugh maps be used to simplify Boolean expressions?

00:00 Karnaugh maps - Part 3
00:10 Intro
00:15 A note about this video
00:31 Using a Karnaugh map to simplify Boolean expressions with three variables
03:47 Simplification rules
04:50 Example 1
09:23 Example 2
10:57 An additional rule
11:10 Example 3
15:23 Recap
16:02 Key question
16:14 Going beyond the specification
16:27 Gray codes
17:55 Using a Karnaugh map to simplify Boolean expressions with three variables continued
18:11 Boolean Algebra cheat sheet
19:06 Outro

Last updated: 22.07.26

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