KwickClips Computer Systems · 38 sec · free
What is (A.B)'?
Short answer. A' + B'.
What is the rule to remember?
Break the bar, change the sign.
De Morgan
| Left | Right | Change |
|---|---|---|
| (A+B)' | A'.B' | plus to dot |
| (A.B)' | A'+B' | dot to plus |
Remember
| Break the bar |
| Change the sign |
How do you remove a bar over a bracket? Use De Morgan. Not of A plus B is not A dot not B. Not of A dot B is not A plus not B. Two steps. Break the bar. Change the sign.
This clip is from the full lesson: Boolean Algebra: Laws and Theorems — 8 minutes, with the tables, the quick answers and the whole lesson in text.
Useful for: CBSE Class 11 Computer Science (083), CBSE Class 11 Computer Science Essentials (083), ISC Class 12 Computer Science (868), ISC Class 12 Computer Science (868)
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