AND gate
- noun
- Specialized
- In digital electronics, an AND gate requires all of its inputs to be true for the output to be true.
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Watch on YouTubeLike an an AND gate, for instance, is a gate that you would actually etch into a chip here.
- Like an an AND gate, for instance, is a gate that you would actually etch into a chip here.
- Well, if it's an and if it's an and gate, it's the sum of the two children.
Examples
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We've got an AND gate here and an OR gate in this chip here.
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OK, so to build this out, we need some XOR gates, some AND gates, and some inverters.
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So although Y star is still there, since it's an AND gate, Z goes down, right?
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So for and gate, the output is A&B.
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And the outputs of the AND gates are odd like this.
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It has the output coming back around into an and gate and then two and gates going into our inverter.
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Actually, they've got "not(x) and y" and "not(y) and x" on the two other exits to the AND gate.
Blog text (30) -
The output of the AND gate is high only when both inputs are high.
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When building a logic circuit, you must connect the inputs to the AND gate correctly to ensure proper functionality.
Synonyms
An electronic circuit that sends a signal only when all inputs are on
Surface Forms
Morphology
The meaning is compositionally derived: 'and' denotes conjunction (requiring all conditions) and 'gate' denotes a device that implements logic, so together they denote a device that only activates when all inputs are present. This is a regular, predictable naming pattern in technical language (and in other languages), so a learner who knows the constituent meanings can infer the MWE's meaning.
Etymology
AND gate comes from the simple picture of a gate that only opens when all keys are turned, because AND means 'all must be true'. That's why the circuit gives an output only when all inputs are 'present'.