Logic diagrams are often drawn to represent boolean expressions.

Each logic gate has its own symbol.

Diagram 1 shows the symbol for a NOT gate.

Diagram 1

Diagram 2 shows the symbol for an AND gate.

Diagram 2

Diagram 3 shows the symbol for an OR gate.

Diagram 3

Diagram 4 shows the symbol for an XOR gate.

Diagram 4

These symbols can be combined to represent boolean expressions. You need to just learn these symbols.

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Draw the logic diagram for the expression Q = NOT(A XOR B).

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