Circuit Diagram – AND OR NOT Gate

Overview: AND, OR, and NOT gates are fundamental components in digital logic circuits, performing basic logical operations. Understanding their circuit diagrams is crucial for designing and analyzing complex digital systems. Here’s a detailed explanation of each gate’s circuit diagram.

1. AND Gate Circuit Diagram:

Description: The AND gate outputs HIGH (1) only if all its inputs are HIGH (1). It performs a logical conjunction.

Components:

• Inputs: Two or more inputs (A, B, etc.)
• Output: One output (Y)

Circuit Diagram:

• Symbol: A flat-ended shape with two or more input lines entering from the left and a single output line exiting on the right.
• Logic Expression: Y = A · B (for a two-input AND gate).

2. OR Gate Circuit Diagram:

Description: The OR gate outputs HIGH (1) if at least one input is HIGH (1). It performs a logical disjunction.

Components:

• Inputs: Two or more inputs (A, B, etc.)
• Output: One output (Y)

Circuit Diagram:

• Symbol: A curved shape with two or more input lines entering from the left and a single output line exiting on the right.
• Logic Expression: Y = A + B (for a two-input OR gate).

3. NOT Gate Circuit Diagram:

Description: The NOT gate, or inverter, outputs the opposite of its input. It performs a logical negation.

Components:

• Input: One input (A)
• Output: One output (Y)

Circuit Diagram:

• Symbol: A triangle with a small circle (representing inversion) at the output end. The input line enters the triangle, and the output line exits through the circle.
• Logic Expression: Y = ¬A or Y = A’

Connecting Components:

• AND Gate: Connect input lines to the gate’s terminals. The output is derived from the logical AND operation.
• OR Gate: Connect input lines to the gate’s terminals. The output is derived from the logical OR operation.
• NOT Gate: Connect the input line to the gate’s input terminal. The output is the logical negation of the input.

Applications:

AND, OR, and NOT gates are used in various digital circuits, such as decision-making processes, data processing, and memory systems. They form the basis for creating more complex logic functions and arithmetic operations.

Conclusion:

These basic gates—AND, OR, and NOT—are essential for designing and understanding digital circuits. Their circuit diagrams provide a foundation for more advanced logic designs and electronic systems.

Circuit Diagram – AND OR Gate