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Which of the following is not an externally visible part of a computer?

Which of the following is not an externally visible part of a computer?
Take Free Practice Test On 2026 JAMB UTME, Post UTME, WAEC SSCE, GCE, NECO SSCE
  • A Centra processing unit
  • B Microchip
  • C Monitor
  • D Keyboard
Correct Answer: Option B
Explanation:

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