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LOGIC DESIGN LABORATORY MANUAL - VTU e-Learning Centre

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Logic Design Laboratory Manual 37<br />

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2) OCTAL TO BINARY ENCODER USING IC 74148. TRUTH TABLE<br />

Inputs<br />

Outputs<br />

E 1 I 0 I 1 I 2 I 3 I 4 I 5 I 6 I 7 A 2 A 1 A 0 G S E 0<br />

1 X X X X X X X X 1 1 1 1 1<br />

0 1 1 1 1 1 1 1 1 1 1 1 1 0<br />

0 X X X X X X X 0 0 0 0 0 1<br />

0 X X X X X X 0 1 0 0 1 0 1<br />

0 X X X X X 0 1 1 0 1 0 0 1<br />

0 X X X X 0 1 1 1 0 1 1 0 1<br />

0 X X X 0 1 1 1 1 1 0 0 0 1<br />

0 X X 0 1 1 1 1 1 1 0 1 0 1<br />

0 X 0 1 1 1 1 1 1 1 1 0 0 1<br />

0 0 1 1 1 1 1 1 1 1 1 1 0 1<br />

3) HEXADECIMAL TO BINARY ENCODER

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