Charles Babbage (1791–1871): For what key contribution is he primarily remembered in the history of computing? Focus on his foundational machine concepts. Choose the correct description.

Difficulty: Easy

Inventing the transistor used in modern computers
Designing the Analytical Engine and the Difference Engine (foundations of programmable computing)
Writing the first high-level programming language
Building the first electronic digital computer using vacuum tubes

Correct Answer: Designing the Analytical Engine and the Difference Engine (foundations of programmable computing)

Explanation:

Given data

The question asks Babbage's chief contribution.

Concept / Approach
Babbage conceived mechanical engines to compute and to be general-purpose programmable (Analytical Engine), anticipating key components like control, memory, and arithmetic unit.

Why others are incorrect
Transistors and electronic digital computers arrived a century later; high-level languages came much later as well.

Final Answer
Designing the Analytical Engine and the Difference Engine.

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Charles Babbage (1791–1871): For what key contribution is he primarily remembered in the history of computing? Focus on his foundational machine concepts. Choose the correct description.

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