Day 4 of My UGC NET Journey:
3-Variable K-Map Made Simple!
Yesterday we learned 2-variable K-Map (4 cells).
Today 3-variable = 8 cells! (2³)
Why Gray Code 00 -> 01 -> 11 -> 10?
So that only 1 bit changes between neighbours = easy grouping!
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Example in picture:
F has 1s at m0,m1,m4,m5
They form a group of 4
In that group B = 0 always, A and C keep changing, so they cancel.
Final answer: F = B’ (B NOT) — So simple!
Trick I learned:
- Always make biggest group (power of 2: 1,2,4,8)
- Group of 4 removes 2 variables
- Group of 8 removes 3 variables!
After 13 years away from studies, K-Map was scary before, but now it’s just grouping!
Learning in public — Day 4/30
hashtag#UGCNET hashtag#ComputerScience hashtag#KMap hashtag#LearningInPublic hashtag#GateUGC
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