Who designed the Difference Engine and Analytical Engine? 

The correct answer is Charles Babbage.

Key Points

• Charles Babbage is known as the "father of the computer".
• He designed the Difference Engine and the Analytical Engine, which are considered the first mechanical computers.
• The Difference Engine was intended to perform mathematical calculations.
• The Analytical Engine had the basic components of the modern computer, including the concept of a programmable machine.

Additional Information

• J. Presper Eckert: J. Presper Eckert was an American electrical engineer and computer pioneer who, along with John Mauchly, designed the first general-purpose electronic digital computer, ENIAC.
• Douglas Engelbart: Douglas Engelbart was an American engineer and inventor, known for his work on human-computer interaction, particularly the invention of the computer mouse.
• John Mauchly: John Mauchly, along with J. Presper Eckert, is known for designing the ENIAC, the first general-purpose electronic digital computer.