The major processing steps identified in a top-down program design are called

The major processing steps identified in a top-down program design are called "modules" or "subprograms".

Here's a step-by-step explanation:

1. Identify the Problem: The first step in top-down design is to identify the problem that needs to be solved. This involves understanding the requirements and constraints of the problem.

2. Break Down the Problem: The next step is to break down the problem into smaller, more manageable parts. This is where the concept of modules or subprograms comes in. Each module represents a specific part of the overall problem.

3. Design the Modules: Once the problem has been broken down into modules, the next step is to design each module. This involves determining what each module needs to do and how it will do it.

4. Implement the Modules: After the modules have been designed, the next step is to implement them. This involves writing the code for each module.

5. Test and Debug: The final step in top-down design is to test and debug the program. This involves running the program to see if it works as expected and fixing any issues that arise.

6. Integration: Once all modules are tested individually, they are integrated and tested as a whole system to ensure they work together as expected.

So, in a top-down program design, the major processing steps are often referred to as modules or subprograms.