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Study Stuff for MCA Examinations - NIMCET
Study Stuff for MCA Examinations - NIMCET
Previous Year Question (PYQs)
Consider a logic gate circuit, with 8 input lines $(D_0,D_1,\ldots,D_7)$ and 3 output lines $(A_0,A_1,A_2)$ specified by following operations
$A_2=D_4+D_5+D_6+D_7$
$A_1=D_2+D_3+D_6+D_7$
$A_0=D_1+D_3+D_5+D_0$
Where $+$ indicates logical OR operation. This circuit is
$A_2=D_4+D_5+D_6+D_7$
$A_1=D_2+D_3+D_6+D_7$
$A_0=D_1+D_3+D_5+D_0$
Where $+$ indicates logical OR operation. This circuit is
Solution
In an octal to binary encoder, there are $8$ input lines and $3$ output lines.The outputs represent binary form of input lines $D_0$ to $D_7$.
Standard equations are:
$A_2=D_4+D_5+D_6+D_7$
$A_1=D_2+D_3+D_6+D_7$
$A_0=D_1+D_3+D_5+D_7$
So, the given circuit represents an Octal to Binary encoder.
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