Difference between revisions of "AND (Chip)"
From Electrical Age
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| − | The AND gate is a basic digital logic gate that implements logical conjunction. A 1 (high) output | + | The [https://en.wikipedia.org/wiki/AND_gate AND gate] is a basic digital logic gate that implements logical conjunction. A 1 (high) output |
results only if all of the three inputs to the AND gate are 1 (high). If any of the inputs is | results only if all of the three inputs to the AND gate are 1 (high). If any of the inputs is | ||
0 (low), a 0 (low) output results. | 0 (low), a 0 (low) output results. | ||
Revision as of 00:52, 28 December 2016
The AND gate is a basic digital logic gate that implements logical conjunction. A 1 (high) output results only if all of the three inputs to the AND gate are 1 (high). If any of the inputs is 0 (low), a 0 (low) output results.
If no signal is connected to an input pin, the input is read as 1 (high). This is done by internal pull-up resistors that pull the signal to high in the absence of an input signal. Using this mechanism the AND gate can be used with 2 or 3 inputs in the exact same way.
Play with the 3 buttons to see the function of the AND gate. You will see that the output is only 1 (high) if all 3 inputs are 1 (high).
