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| | Greetings! I am Myrtle Shroyer. California is where I've usually been living and I adore each working day living here. To collect cash is one of the issues I adore most. Since she was eighteen she's been working as a receptionist but her promotion never arrives.<br><br>my web blog - [http://www.dicas-saudenatural.com/members/shastsalcido/activity/89589/ over the counter std test] |
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| |colspan=2|'''INPUT''' || '''OUTPUT'''
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| |- bgcolor="#ddeeff" align="center"
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| | A || B || A AND B
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| |- bgcolor="#ddffdd" align="center"
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| |0 || 0 || 0
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| |- bgcolor="#ddffdd" align="center"
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| |0 || 1 || 0
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| |- bgcolor="#ddffdd" align="center"
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| |1 || 0 || 0
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| |- bgcolor="#ddffdd" align="center"
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| |1 || 1 || 1
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| |}
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| The '''AND gate''' is a basic digital [[logic gate]] that implements [[logical conjunction]] - it behaves according to the [[truth table]] to the right. A HIGH output (1) results only if both the inputs to the AND gate are HIGH (1). If neither or only one input to the AND gate is HIGH, a LOW output results. In another sense, the function of AND effectively finds the ''minimum'' between two binary digits, just as the [[OR gate|OR]] function finds the ''maximum''. Therefore, the output is always 0 except when all the inputs are 1s.
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| ==Symbols==
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| There are three symbols for AND gates: the American ([[ANSI]] or 'military') symbol and the [[International Electrotechnical Commission|IEC]] ('European' or 'rectangular') symbol, as well as the deprecated [[DIN]] symbol. For more information see [[Logic gate#Symbols|Logic Gate Symbols]].
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| {| align=center style="text-align:center"
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| |[[Image:AND ANSI.svg]]
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| |[[Image:AND IEC.svg]]
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| |[[image:AND DIN.svg]]
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| |-
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| |''MIL/ANSI Symbol''
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| |''IEC Symbol''
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| |''DIN Symbol''
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| |}
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| The AND gate with inputs ''A'' and ''B'' and output ''C'' implements the logical expression <math>C = A \cdot B</math>.
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| ==Implementations==
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| {|
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| | [[Image:NMOS AND gate.png|thumb|NMOS AND gate]] || [[Image:AND gate diode.svg|thumb|AND gate using diodes]]
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| |}
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| An AND gate is usually designed using N-channel (pictured) or P-channel [[MOSFET]]s. The digital inputs '''a''' and '''b''' cause the output '''F''' to have the same result as the AND function.
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| === Alternatives ===
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| If no specific AND gates are available, one can be made from [[NAND Gate|NAND]] or [[NOR Gate|NOR]] gates, because NAND and NOR gates are considered the "universal gates," <ref>
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| Mano, M. Morris and Charles R. Kime. ''Logic and Computer Design Fundamentals, Third Edition.'' Prentice Hall, 2004. p. 73.</ref> meaning that they can be used to make all the others. XOR Gates can also be used to simulate AND functions, but are rarely used to do so.
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| {| align=center style="text-align:center"
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| ! width="150" |Desired gate!! width="150" |NAND construction!! width="150" |NOR construction
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| |[[Image:AND ANSI Labelled.svg]]||[[Image:AND from NAND.svg]]||[[File:AND using NOR.svg]]
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| |}
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| == See also ==
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| {{commons category|AND gates}}
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| *[[OR gate]]
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| *[[NOT gate]]
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| *[[NAND gate]]
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| *[[NOR gate]]
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| *[[XOR gate]]
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| *[[XNOR gate]]
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| *[[Boolean algebra (logic)]]
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| *[[Logic gates]]
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| {{Logical connectives}}
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| == References ==
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| <div references-small>
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| <references />
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| </div>
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| [[Category:Logic gates]]
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Greetings! I am Myrtle Shroyer. California is where I've usually been living and I adore each working day living here. To collect cash is one of the issues I adore most. Since she was eighteen she's been working as a receptionist but her promotion never arrives.
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