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2 marksHardware Components

CAPE Computer Science Unit 1 · 2016 · Paper 2 · Question 2(b)(ii)

A scenario where electrical supply is inconsistent, and a cellphone requiring 5 to 7 hours to charge provides 10 hours of battery life.

Explain the purpose and core benefit of a voltage regulator in this scenario.

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Other parts of this question

  1. 2(a)Provide ONE example for EACH of the missing entries labelled 1, 2, 3 and 4 in Figure 2.[4 marks]
  2. 2(b)(i)Explain the purpose and core benefit of a surge protector in this scenario.[2 marks]
  3. 2(b)(iii)Explain the purpose and core benefit of a UPS in this scenario.[2 marks]
  4. 2(c)Define the term 'clock speed' in relation to a processor, and give TWO examples of CPU clock speeds using different units of measure.[3 marks]
  5. 2(d)Describe ONE input device and ONE output device suitable for use by a visually impaired person.[4 marks]
  6. 2(e)Explain the main difference between a supercomputer and a mainframe computer, and give TWO examples of how each type is used.[5 marks]
  7. 2(f)Write a sequence of processor instructions to perform a mathematical calculation, including THREE different instructions.[3 marks]

More practice: the rest of this paper · more Hardware Components questions · all CAPE Computer Science Unit 1 past papers