| Column - I | Column - II |
| (a) John Mauchly & J. Presper Eckert | (i) IBM Mark I Computer |
| (b) Howard H. Aiken | (ii) Invented the Difference Engine and Analytical Engine |
| (c) Charles Babbage | (iii) Invented electro-mechanical tabulator to help with the U.S. Census |
| (d) Herman Hollerith | (iv) Created the ENIAC |
A) (a) - (iv), (b) - (i), (c) - (ii), (d) - (iii)
B) (a) - (ii), (b) - (iii), (c) - (i), (d) - (iv)
C) (a) - (iii), (b) - (i), (c) - (ii), (d) - (iv)
D) (a) - (iv), (b) - (ii), (c) - (iii), (d) - (i)
Correct Answer: A
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