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3 marksData and Information Distinction

CSEC Information Technology · January 2014 · Paper 2 · Question 5(a)

Questions on data representation and storage media.

Find the decimal representation of a SIGNED number represented by BCD, 1011 0110 0101 0100. Show all working.

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Other parts of this question

  1. 5(b)Find the two's complement eight-bit representation of the decimal number, -42. Show all working.[3 marks]
  2. 5(c)Copy and complete the table by indicating the type of storage media and the method used to access data for DVD-ROM and Data tape.[4 marks]

More practice: the rest of this paper · more Data and Information Distinction questions · all CSEC Information Technology past papers