LOGIC DESIGN LABORATORY MANUAL - VTU e-Learning Centre

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Logic Design Laboratory Manual 17 ___________________________________________________________________________ LEARNING OBJECTIVE: To learn the importance of non-weighted code To learn to generate gray code COMPONENTS REQUIRED: IC 7400, IC 7486, and IC 7408, Patch Cords & IC Trainer Kit I) BINARY TO GRAY CONVERSION 0 0 0 0 1 1 1 1 G3 = B3 0 0 1 1 0 0 1 1 0 1 0 1 0 1 0 1 0 0 1 1 0 0 1 1 G2= B3 ⊕ B2 0 1 1 0 0 1 1 0 1 0 0 1 1 0 0 1 G1=B1 ⊕ B2 0 0 0 0 1 1 1 1 0 0 0 0 Binary Gray B3 B2 B1 B0 G3 G2 G1 G0 0 0 0 0 0 0 0 0 0 0 0 1 0 0 0 1 0 0 1 0 0 0 1 1 0 0 1 1 0 0 1 0 0 1 0 0 0 1 1 0 0 1 0 1 0 1 1 1 0 1 1 0 0 1 0 1 0 1 1 1 0 1 0 0 1 0 0 0 1 1 0 0 1 0 0 1 1 1 0 1 1 0 1 0 1 1 1 1 1 0 1 1 1 1 1 0 1 1 0 0 1 0 1 0 1 1 0 1 1 0 1 1 1 1 1 0 1 0 0 1 1 1 1 1 1 0 0 0 1 1 1 1 G0=B1 ⊕ B0 BOOLEAN EXPRESSIONS: G3=B3 G2=B3 ⊕ B2 G1=B1 ⊕ B2; G0=B1 ⊕ B0
Logic Design Laboratory Manual 18 ___________________________________________________________________________ REALIZATION USING NAND GATES: BINARY TO GRAY CODE USING EX-OR GATES II) GRAY TO BINARY CONVERSION 0 0 1 1 0 0 1 1 0 0 1 1 0 0 1 1 B3 = G3
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