The NAND Gate
The NAND Gate
The NAND gate is the-most difficult to understand. All the-others are English words, so they-are easier to understand. thething about NOR & NAND gates is that-they are like OR or AND gates, followed-immediately by a NOT gate. .So if you find them just to difficult, you can always remember them like that.
Output Q = 0 if and only if A=B=1.
|
A |
B |
Q |
|
0 |
0 |
1 |
|
0 |
1 |
1 |
|
0 |
0 |
1 |
|
0 |
1 |
0 |
When asked to find a truth table for a circuit, it can-sometimes be helpful to use extra letters. These are usually X & Y, but any-letters can be used. The easiest way-would be to look at the gate below.
The gates above are the-only gates you need to-know for the NEAB syllabus. But there is one other gate that is very useful. It is-called the eXclusive OR (XOR). You can buy-this in a chip, or you can build-your own. It can be constructed in the following way.
Keywords :
NAND,
Gate,
NOR Gate,
Gate,
Decimal,
Binary,
Hexodecimal,
Logic Gates
Writer : delon |
17 Mar 2006 Fri
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