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Which of the following computing devices did not exist in the pre-computing age to the...

Computer Studies
WAEC 2025

Which of the following computing devices did not exist in the pre-computing age to the 19th century?

 

 

  • A. Napiers bone
  • B. Abacus
  • C. ENIAC
  • D. Slide Rule
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Correct Answer: Option D
Explanation

ENIAC (Electronic Numerical Integrator and Computer) is considered to be the first operational digital computer in USA,
developed by Army ordinance to compute World War II ballistic firing tables.

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