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COMBINATIONL CKT SOP

LOGIC DIAGRAM

THEOREM 2

GRAY CODE TO BINARY CONVERTER

DEMULTIPLEXER

halfadder

full adder

THEOREM 6(ABSORPTION THEOREM)

shift register

full adder using 2 half adder

THEOREM 5(DE MORGANS)

FULL SUBRACTOR

THEOREM 3

half subtractor

RIPPLE COUNTER

BCD TO EXCESS -3 CONVERTOR

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BINARY TO GRAY CODE

THEOREM 4(ASSOCIATIVE)

THEOREM 1

full adder using 2 half adder

FULL SUBTRACTOR USING TWO HALF SUBTRACTOR

EXCESS-3 TO BCD CONVERTOR