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1
EEE 441 LOGICAL DESIGN IILABORATORY
EXPERIMENT#3
COMBINATIONAL CIRCUIT DESIGN I
PRELIMINARY WORK
Mehmet BAYRAM 9610433
2
I. Object
In this experiment yo will design, cpnsturact and test various combinational circuits.
II. Preliminary Work
1. a) b)
Y X
' 'Y A B C D= + + + ' 'X AB C D=
A B C D X Y 0 0 0 0 0 1 0 0 0 1 0 1 0 0 1 0 0 1 0 0 1 1 0 1 0 1 0 0 0 1 0 1 0 1 0 1 0 1 1 0 0 1 0 1 1 1 0 1 1 0 0 0 0 1 1 0 0 1 1 0 1 0 1 0 0 1 1 0 1 1 0 1 1 1 0 0 0 1 1 1 0 1 0 1 1 1 1 0 0 1 1 1 1 1 0 1
1 1 1 1 1 1 1 1 1 1 1 1 1 1 1
1
3
c)
d)
2.
X AB AC AD BCD= + + +
%45 %30 %15 %10 A B C D X 0 0 0 0 0 0 0 0 1 0 0 0 1 0 0 0 0 1 1 0 0 1 0 0 0 0 1 0 1 0 0 1 1 0 0 0 1 1 1 1 1 0 0 0 0 1 0 0 1 1 1 0 1 0 1 1 0 1 1 1 1 1 0 0 1 1 1 0 1 1 1 1 1 0 1 1 1 1 1 1
1 1 1 1 1 1 1 1
4
With NAND Gates
With NOR Gates
3.
' ' 'X A B C= +
A B C D X 0 0 0 0 1 0 0 0 1 1 0 0 1 0 1 0 0 1 1 1 0 1 0 0 1 0 1 0 1 1 0 1 1 0 1 0 1 1 1 1 1 0 0 0 1 1 0 0 1 0 1 0 1 0 0 1 0 1 1 0 1 1 0 0 0 1 1 0 1 0 1 1 1 0 0 1 1 1 1 0
1 1 1 1 1 1 1 1 1 1