Basic Gates NOT AND OR - Digital Circuits
softetechnologies
01-03-2019    141 times
Basic Gates AND OR NOT

The digital world based on the three basic gates.

  • NOT Gate
  • AND Gate
  • OR Gate

NOT Gate

NOT Gate is also known as inverter. This gate receives only one input and gives us just inverted signal of the input.   That is if the input is 1 then output is 0 and vise-versa.  It is symbolized as

NOT GATE
NOT GATE

But in the combinational circuit we can use it as a bubble. If A is the input then output symbolized as A‘ or A in digital equations.

NOT Gate
INPUT OUTPUT
1 0
0 1

AND Gate

This gate receives two or more than two inputs but gives us only one output. This circuit gives a high (1) or true output if all the applied inputs are high. An AND gate symbolized as dot (.) in digital equations. If A and B are the input then output are A.B but sometimes the dot is omitted i.e. AB.

AND GATE
AND GATE
AND Gate
INPUT OUTPUT
A B C
0 0 0
0 1 0
1 0 0
1 1 1
Private Teacher

OR Gate

This gate receives two or more than two inputs but gives us only one output. This circuit gives a high (1) or true output if any of the applied inputs are high. An OR gate symbolized as plus (+) in a digital equations. If A and B are the input then output are A+B.

OR GATE
OR GATE
AND Gate
INPUT OUTPUT
A B C
0 0 0
0 1 0
1 0 0
1 1 1
softetechnologies
softetechnologies
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Arnab De
I have over 16 years of experience working as an IT professional, ranging from teaching at my own institute to being a computer faculty at different leading institute across Kolkata. I also work as a web developer and designer, having worked for renowned companies and brand. Through tutorialathome, I wish to share my years of knowledge with the readers.
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