KwickClips Computer Systems · 46 sec · free
What is A + A.B?
Short answer. A, by the absorption law.
What is A + A?
A, by idempotence.
Boolean laws
| Law | Example | Result |
|---|---|---|
| Identity | A+0, A.1 | A |
| Idempotence | A+A | A |
| Distributive | A.(B+C) | A.B+A.C |
| Absorption | A+A.B | A |
Remember
| Commutative: order free |
| Associative: grouping free |
Six Boolean laws. Can you spot each one? Here are four. Identity: zero or one leaves A. Idempotence: A plus A is A. Distributive opens brackets. Absorption: A swallows A dot B. Two more. Order does not matter. Grouping does not matter.
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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