NAND gate is also known as digital building block explain

Explanation

### Step-by-Step Solution

1. **Definition of a NAND Gate**:
A NAND gate is a digital logic gate that outputs false only when all its inputs are true. In all other cases, it outputs true.

2. **Versatility of the NAND Gate**:
The NAND gate is known for its versatility. It can be used to create any other type of logic gate, including AND, OR, and NOT gates. This is a key feature that establishes it as a fundamental building block in digital electronics.

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