When the inputs of a two input logic gate are 0 and 0, the output is 1. When the inputs are 1 and 0, the output is zero. The type of logic gate is

Options

A. XOR
B. NAND
C. NOR
D. OR

Explanation

To determine the type of logic gate based on the given inputs and outputs, we can analyze the conditions provided:

1. **Identify Inputs and Outputs**:
- Let the inputs be A and B.
- The output will be denoted as Y.

2. **Analyze the Given Conditions**:
- When the inputs A = 0 and B = 0, the output Y = 1.
- When the inputs A = 1 and B = 0, the output Y = 0.

3. **Construct a Truth Table**:
- We can summarize the information in a truth table:

| A | B | Y |
|---|---|---|
| 0 | 0 | 1 |
| 1 | 0 | 0 |

4. **Determine the Logic Gate**:
- From the truth table, we can see that the output is 1 only when both inputs are 0. This is characteristic of a NOR gate.
- A NOR gate outputs 1 only when both inputs are 0, and it outputs 0 for any other combination of inputs.

5. **Verify with Other Input Combinations**:
- If we consider the input combination of A = 0 and B = 1, the output would also be 0 for a NOR gate, which is consistent with the behavior we expect.
- If A = 1 and B = 1, the output would again be 0 for a NOR gate.

6. **Conclusion**:
- Based on the analysis and the truth table, the type of logic gate that satisfies the given conditions is a **NOR gate**.

### Final Answer:
The type of logic gate is a **NOR gate**.