Mubbasher
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CSI Task 1.
(a) Consider the circuit below:
Three gates have been taken out of the circuit. Place the gates in the circuit, you choose where
and draw the completed circuit (you can copy this diagram into your submission, see
Blackboard for the Word file). Then:
Write X as an unsimplified Boolean expression and
As a truth table (the truth table must show intermediate values)
(5 marks each, 10 marks total)
(b) You must design a combinational logic circuit to the top four countries from the list you wish to
visit.
The circuit has three inputs, forming the three bits of a binary number that represent eight
football teams ( 0= Barcelona, 1= Real Madrid, 2= Liverpool, 3= Brighton, 4= Manchester City,
5= Manchester United, 6=Arsenal, 7=PSG)
The circuit is to have an output of 1 for the 4 teams out of the eight that you consider the
best (you are to choose the teams.)
The output will be 0 for the rest of the teams.
Design a logic circuit to implement OUT
Do your design as a truth table, a Karnaugh Map (K-Map), a boolean expression and a logic circuit.
(10 marks)