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To design and implement multiplexer using basic logic gates.

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Apparatus required:-
The following electronics components are required.
     ·         OR Gate (IC-7432)
·         NOT Gate (IC-7404)
·         AND Gate(IC-7411)
·         IC-74150
·         Digital IC Trainer KIT
·         Connecting wires
Description:-
Multiplexer means transmitting a large number of information units over a smaller number of channels or lines. A digital multiplexer is a combinational circuit that selects binary information from one of many input lines and directs it to a single output line. The selection of a particular input line is controlled by a set of selection lines. Normally there are 2n input line and n selection lines whose bit combination determine which input is selected.
Block Diagram of Multiplexer:-

Function Table for Multiplexer:-
S1
S0
INPUTS Y
0
0
D0 D0 S1’ S0’
0
1
D1 D1 S1’ S0
0
1
D1 D1 S1’ S0
1
1
D3 D3 S1 S0

Y = D0 S1’ S0’ + D1 S1’ S0 + D2 S1 S0’ + D3 S1 S0
Pin Diagram of IC-74150:-
Logic Diagram of Multiplexer:

Truth-Table:-
S1
S0
Y=OUTPUT
0
0
D0
0
1
D1
0
1
D2
1
1
D3
Conclusion: - All the output verified the result of Truth Table.
Precaution in lab:-
·         Handle the ICs carefully.
·         Check the connection once again before Switching on the Digital Trainer KIT.
·         Switch of the Trainer Kit after performing the Experiment.

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  2. Please upload the experiment Multiplexer using I C 74153

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