Digital Logic Design Lab 3

[# Digital Logic Design Lab 3

Main note

Making Not And Or from Nand Gate

Using nor to make other gates

References

Information

• date: 2024.07.30
• time: 13:10](<Here’s a completed version of the note for “Digital Logic Design Lab 3” with detailed sections, similar to the provided examples:

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Digital Logic Design Lab 3

Main Note

Making NOT, AND, OR from NAND Gate

Objective

To demonstrate how to construct NOT, AND, and OR gates using only NAND gates.

Theory

• NAND Gate: A fundamental logic gate that outputs false only when all its inputs are true. It can be used to create other logic gates.

NAND Gate Truth Table

Input A	Input B	Output
0	0	1
0	1	1
1	0	1
1	1	0

Constructing NOT Gate Using NAND Gates

To create a NOT gate, connect both inputs of a NAND gate to the same signal:

• NOT Gate Implementation:
  • Connect input A to both inputs of a NAND gate.
  • The output will be NOT A.

Truth Table for NOT Gate

Input A	Output (NOT A)
0	1
1	0

Constructing AND Gate Using NAND Gates

To create an AND gate, use the following configuration:

1. First Stage: Connect inputs A and B to a NAND gate to get the intermediate output N1.
2. Second Stage: Connect the output N1 to both inputs of another NAND gate to get the final output.

Truth Table for AND Gate

Input A	Input B	Output (A AND B)
0	0	0
0	1	0
1	0	0
1	1	1

Constructing OR Gate Using NAND Gates

To create an OR gate, use the following configuration:

1. First Stage: Connect input A to both inputs of a NAND gate to get N1.
2. Second Stage: Connect input B to both inputs of a NAND gate to get N2.
3. Third Stage: Connect N1 and N2 to the inputs of another NAND gate to get the final output.

Truth Table for OR Gate

Input A	Input B	Output (A OR B)
0	0	0
0	1	1
1	0	1
1	1	1

Using NOR to Make Other Gates

Objective

To demonstrate how to construct NOT, AND, and OR gates using only NOR gates.

Theory

• NOR Gate: A fundamental logic gate that outputs true only when all its inputs are false. It can be used to create other logic gates.

NOR Gate Truth Table

Input A	Input B	Output
0	0	1
0	1	0
1	0	0
1	1	0

Constructing NOT Gate Using NOR Gates

To create a NOT gate, connect both inputs of a NOR gate to the same signal:

• NOT Gate Implementation:
  • Connect input A to both inputs of a NOR gate.
  • The output will be NOT A.

Truth Table for NOT Gate

Input A	Output (NOT A)
0	1
1	0

Constructing AND Gate Using NOR Gates

To create an AND gate, use the following configuration:

1. First Stage: Connect inputs A and B to a NOR gate to get N1.
2. Second Stage: Connect N1 to both inputs of another NOR gate to get the final output.

Truth Table for AND Gate

Input A	Input B	Output (A AND B)
0	0	0
0	1	0
1	0	0
1	1	1

Constructing OR Gate Using NOR Gates

To create an OR gate, use the following configuration:

1. First Stage: Connect input A to both inputs of a NOR gate to get N1.
2. Second Stage: Connect input B to both inputs of a NOR gate to get N2.
3. Third Stage: Connect N1 and N2 to the inputs of another NOR gate to get the final output.

Truth Table for OR Gate

Input A	Input B	Output (A OR B)
0	0	0
0	1	1
1	0	1
1	1	1

References

Information

• Date: 2024.07.30
• Time: 13:10

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