Digital circuit can be made by the repetitive use of

Options

A. OR gates
B. AND gates
C. NOT gates
D. NAND gates

Answer

To solve the question "Digital circuit can be made by the repetitive use of what?", we need to identify which type of gate is capable of creating any digital circuit through its repeated application.

### Step-by-Step Solution:

1. **Understanding Digital Circuits**:
- Digital circuits are composed of logic gates that perform logical operations on one or more binary inputs to produce a single binary output.

2. **Identifying Types of Logic Gates**:
- Common types of logic gates include AND, OR, NOT, NAND, NOR, XOR, and XNOR gates. Each gate has its own function and output based on the inputs provided.

3. **Defining Universal Gates**:
- Universal gates are gates that can be used to implement any Boolean function without needing to use any other gate type. The two primary universal gates are NAND and NOR.

4. **Exploring the NAND Gate**:
- The NAND gate is a combination of an AND gate followed by a NOT gate. It takes two or more inputs and produces an output that is false only when all inputs are true.
- The NAND gate is considered a universal gate because any logic function can be constructed using just NAND gates.

5. **Conclusion**:
- Since the question asks for the gate that can be repetitively used to create any digital circuit, the answer is the NAND gate.

### Final Answer:
The digital circuit can be made by the repetitive use of **NAND gate**.