Quelpr
6 marksComputer Architecture

CAPE Computer Science Unit 1 · 2009 · Paper 2 · Question 1(c)

Draw a clearly labelled block diagram of a 4 x 1 multiplexer having 4 inputs and 1 output.

The mark scheme is shown once you've answered.

Practise this question

Other parts of this question

  1. 1(a)Draw the logic symbol and provide the corresponding truth table for THREE primary logic gates.[6 marks]
  2. 1(b)Using the primary logic gates from part (a), design and draw a circuit that implements the truth table of the exclusive-OR gate shown in Table 1.[6 marks]
  3. 1(d)(i)Calculate the decimal equivalent of 00011011_2.[1 mark]
  4. 1(d)(ii)Determine whether the result of 0111 + 1110 can be stored as a 4-bit binary number.[2 marks]
  5. 1(d)(iii)Showing all working, find the largest and smallest integers that can be represented using 4-bit signed magnitude (with the leftmost bit as the sign bit).[2 marks]
  6. 1(d)(iv)Find the 4-bit two's complement representation of -5.[2 marks]

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