What are digital logic gates?

Answer 1

Any logic gate from which all other logic gate functions can be derived. The two universal gates are NAND and NOR.

Answer 2

Logic gates are digital circuits constructed from diodes, transistors, and resistors that produce an output, from some given inputs.

NOT gates - They are also called Inverters. The NOT operation can be performed on a single input. For example, if the variable A is subjected to the NOT operation, the result x can be expressed as X =  where  represents the NOT operation.

The truth table of the NOT operation is as follows:

A

X = Â

0

1

1

0

AND gates - The AND gate uses 2 or more inputs to produce a single output. The resultant output 1 occurs only then all of the inputs are 1.

Truth Table for 2 input AND Gate

A

B

X = A . B

0

0

0

0

1

0

1

0

0

1

1

1

The output A.B can be written as AB, without the '.' symbol.

OR gates - The OR gate uses 2 or more inputs to produce a single output. The result produced is 1 when any of the inputs is 1. The result 0 is produced only when all the input variables are 0.

Truth Table for OR Gate

A

B

X = A + B

0

0

0

0

1

1

1

0

1

1

1

1

Answer 3

A logic gate is a combination of transistor switches arranged so that the output of the device follows a particular pattern. The pattern is based on the logic function you want to simulate. For example, the simplest inverter is a transistor switch which is between a 'high' logic voltage source (usually 5v) and ground. When the input, connected to the base of the transistor, goes high, the transistor is active, sucking nearly all the current to ground, making the output a low voltage. When the input is low, little current is sunk to ground, so the output goes high.

Another example would be an AND gate, which is wired so that two transistor switches have to be on in order for the output to go high. these would be transistors in series, since they would both have to be 'on' for the current to flow.

Answer 4

it's a little and basic integrated circuit that makes calculations regarding Boole's logic (true/false)

they can make various operations instantly regarding as the type of logic gate

based on the 2 inputs, giving the result as output.

they can make the OR operand, And, Xor,Not and a combination of them (cheaper) Nor,Nand,XNor

it's the base for digital computing.

Answer 5

Logic Gates are electronic building blocks of a digital system. They are realisations of the fundamental Boolean Algebraic Operations; AND, OR, NOT, XOR, NAND, NOR, XNOR, BUF.

Answer 6

AND, OR and NOT

NAND, NOR

Answer 7

and,or,not.