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==Implementations==

• 
  AND gate using diodes
• 
  AND gate using transistors
• 
  NMOS AND gate

An AND gate is usually designed using N-channel (pictured) or P-channel MOSFETs. The digital inputs a and b cause the output F to have the same result as the AND function.

Analytical representation

$f(a,b)=a*b$ is the analytical representation of AND gate:

• $f(0,0)=0*0=0$
• $f(0,1)=0*1=0$
• $f(1,0)=1*0=0$
• $f(1,1)=1*1=1$

Alternatives

Further information: NAND logic and NOR logic

If no specific AND gates are available, one can be made from NAND or NOR gates, because NAND and NOR gates are considered the "universal gates," meaning that they can be used to make all the others.

Desired gate	NAND construction	NOR construction

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