(1) Simplify the equations below by using Algebra laws.
(a) A.B + A’B + A’.B’
b) A.B.C’ + A’.B’.C + A’B.C + A.B.C
c) A.B.C + A.B’.C’ + A’.B.C + A’B’.C
d) (A’.B’.C + A.B.C’ + A’.B. C + A.B.C)’
(e) ((A+C).(A.B)’ + (BC + A’)’)’
(2) Simplify (1a), (1b) and (1c) by using
a) Karnaugh map.
b) The Quine-McCluskey Method
(3) In a singing contest, 3 judges A, B and C can register their votes as ‘1’ or ‘0’ through switches allocated to them. Contestants will be disqualified if two or more judges register ‘0’ votes for them.
a) Construct a truth table for the above
b) Obtain a simplified Boolean expression for the outputs ‘qualified’.
c) Construct a logic circuit for the simplified ‘disqualified’ output.