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3 marksConcept of Information Technology

CSEC Information Technology · 2011 · Paper 2 · Question 2(a)(i)

Questions on computer arithmetic, representations, and storage capacity.

If the ASCII code for the letter 'I' is 1100110, find the ASCII code for the letter 'K'. Show ALL calculations.

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Other parts of this question

  1. 2(a)(ii)Convert the binary number 01011110 to hexadecimal.[1 mark]
  2. 2(a)(iii)Using two's complement, find the 8-bit representation of -72.[1 mark]
  3. 2(b)John has an external hard drive with a capacity of 1 terabyte (TB) and Mary has a USB flash drive with a capacity of 16 gigabytes (GB). Calculate how many…[2 marks]
  4. 2(c)(i)For Flash Memory Card, indicate whether it is a secondary or primary storage media.[1 mark]
  5. 2(c)(ii)For Random Access Memory, indicate whether it is a secondary or primary storage media.[1 mark]
  6. 2(c)(iii)For Programmable Read Only Memory (PROM), indicate whether it is a secondary or primary storage media.[1 mark]

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