KwickClips Computer Systems · 41 sec · free
When does NAND give 0?
Short answer. Only when all inputs are 1.
When does NOR give 1?
Only when all inputs are 0.
Universal gates
| Gate | Means | Output 1 when |
|---|---|---|
| NAND | NOT AND | not all 1 |
| NOR | NOT OR | all inputs 0 |
Remember
| Universal: builds AND, OR, NOT |
| So it builds any circuit |
Can one gate type build every circuit? Yes, NAND or NOR. NAND gives one unless all inputs are one. NOR gives one only when all inputs are zero. Two points. Universal gates build AND, OR and NOT. So they build anything.
This clip is from the full lesson: Universal Gates and Combined Logic Circuits: NAND, NOR, XOR — 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 11 Computer Science (868), ISC Class 12 Computer Science (868)
More KwickClips from this lesson
Disclaimer. KwickAcademy is free study material for general learning and revision. Parts of it, including the voice-over, are produced with the help of AI tools and may contain errors; if you spot one, please tell us and we will correct it. Syllabus, marks and exam details follow the latest official board publications available to us, and boards can change them at any time, so always confirm against your board's official website and your school. Using this material does not guarantee any marks or result. Board names and trademarks belong to their owners; Kwickprep is not affiliated with or endorsed by any examination board. We never ask for passwords, OTPs or ID numbers. Your progress is saved only in this browser. Full disclaimer · Privacy