How NOR gate is formed ? Draw symbol and truth table for it.

Explanation

To understand how a NOR gate is formed, we can break down the process step by step.

### Step 1: Understanding the Basic Gates
A NOR gate is a combination of an OR gate followed by a NOT gate. The OR gate outputs a high signal (1) if at least one of its inputs is high (1). The NOT gate inverts the output of the OR gate.

### Step 2: Formation of the NOR Gate
1. **OR Gate**: The basic structure of an OR gate has two inputs, A and B. The output of the OR gate (let's call it X) can be expressed as:
\[
...