Equation for AND, NOT, and OR gates. - SS2 ICT Lesson Note

AND Gate:

An AND gate is a digital logic gate that outputs true (1) only when both of its inputs are true (1). Here's the truth table for an AND gate:

 

Input A Input B  Output

0              0              0

0              1              0

1              0              0

1              1              1

The equation for an AND gate can be written as:

Output = A AND B

 

OR Gate:

An OR gate is a digital logic gate that outputs true (1) if at least one of its inputs is true (1). Here's the truth table for an OR gate:

 

Input A Input B  Output

0              0              0

0              1              1

1              0              1

1              1              1

The equation for an OR gate can be written as:

Output = A OR B

 

NOT Gate:

A NOT gate, also known as an inverter, is a digital logic gate that outputs the opposite of its input. Here's the truth table for a NOT gate:

 

Input A Output

0              1

1              0

The equation for a NOT gate can be written as:

Output = NOT A or Output = A'

 

In these equations, A and B are the input values, and 'NOT' represents the logical negation operation.

 

These logic gates are fundamental building blocks in digital circuit design and play a crucial role in various electronic devices and systems.