KwickClips Computer Systems · 40 sec · free
How do you make NOT from NAND?
Short answer. Join both inputs together.
How many NAND gates for OR?
3.
From NAND
| Gate | How | NANDs |
|---|---|---|
| NOT | join inputs | 1 |
| AND | NAND + NOT | 2 |
| OR | NOTs + NAND | 3 |
Remember
| NOT 1, AND 2, OR 3 gates |
Only NAND gates in the box. Can you make NOT? Yes. Join both inputs for NOT. Add a NOT after NAND for AND. Feed NOT A and NOT B into NAND for OR. Count the gates. NOT one, AND two, OR three.
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)
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