Multiplexer Report [PDF]

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TITLE : MULTIPLEXER INSTRUCTION AIMS: The trainees must be able to 1. Design function of Multiplexer 2. Donstruct the internal circuitry of Multiplexer TOOLS, EQUIPMENTS AND MATERIALS: 1. 2. 3. 4. 5.



Breadboard Power supply IC 7408, 7432, 7404, 7411(3 input AND gate), 74151 LED Jumper wires



DRAWING, DATA, TABLE Refer to pages with the procedure instruction GENERAL INSTRUCTION: A multiplexer is a device capable of funneling data lines into a single line transmission to another point. The multiplexer has two or more digital inputs signals connected to its input. Control signals are also input to hell which data-inputs line to select for transmission. D0 D1 D2 D3



Experiment 1 : 2 Line Multiplexer Procedure: 1. IC 7404, 7432, 7408 must be installed in the logic lab breadboard 2. the circuit was constructed as figure 1 3. Data must be set as switch like in multiplexer truth table. Output at LED must recorded in table 1



A 0 1 X X



INPUTS B X X 0 1



C 0 0 1 1 TABLE 1.



OUTPUTS 0 0 0 0



1(B) 1(B) 1(A) 1(A)



Experiment 2 : 4 Line Multipplexer. Procedure: 1. Ic 7411,7408,7404 was installed in the logic breadboard. 2. The circuit was construct in figure above . 3. Data must be set up as switch like input truth table ouput also must be record in table 2



.



INPUTS D0



D1



D2



D3



S0



S1



0 1 0 1 0 1 0 1 0 1 1 1 1 1 1 1



0 0 1 1 0 0 1 1 0 0 0 0 1 1 1 1



0 0 0 0 1 1 1 1 0 0 1 1 0 0 1 1



0 0 0 0 0 0 0 0 1 1 0 1 0 1 0 1



0 1 0 1 0 0 0 0 1 1 1 1 0 0 0 0



0 0 1 1 1 1 1 1 0 0 0 0 1 1 1 1



OUTPUTS Input O/P statement 0 D0 0 D1 0 D2 0 D2 1 D2 1 D2 1 D2 1 D2 0 D1 0 D1 0 D1 0 D1 0 D2 0 D2 1 D2 1 D2



Experiment 3 : 8 Line multiplexer Procedure : 1. Ic 7415 multiplexer was installed in the logic lab breadboard. 2. 8 line multiplexer was constructed as shown in figure 3 3. Data must be set up as shown in table 3.Output LED also indications in table 3 U1



D0 D1 D2 D3 D4 D5 D6 D7 S0 S1 S2 E



4 D0 3 D1 2 D2 1 D3 15 D4 14 D5 13 D6 12 D7



LED1 ~W Y



6



LED2



5



11 A 10 B 9 C 7 ~G 74151N



INPUT E S2 S1 S0 D0 D1 D2 0 0 0 0 1 0 0 0 0 0 1 0 1 0 0 0 0 1 0 0 1 0 0 1 0 0 0 1 0 0 1 1 0 0 0 0 0 1 1 1 1 1 0 1 0 0 0 0 0 0 1 0 1 0 0 0 0 1 0 1 1 1 1 0 1 1 0 0 0 0 0 1 1 1 0 0 0



OUTPUT D3 D4 D5 D6 D70 L1 0 0 0 0 0 1 0 0 0 0 0 1 1 0 0 0 1 0 0 0 0 0 0 1 1 0 0 0 0 1 0 1 1 1 1 0 0 1 0 0 0 1 0 0 1 0 0 1 1 1 0 1 1 0 0 0 0 1 0 1 0 0 0 0 1 1 TABLE 2.



INPUTS STATEMENT D0 D1 D1 D2 D3 D3 D4 D5 D5 D6 D7



CONCLUSION: In this experiment we learn to design the function of Multiplexer and construct the internal circuitry of Multiplexer. Multiplexer is also known as the data selector. QUESTION : 1. Why is a multiplexer sometimes called a data selector Because it can control or choose inputs data to sent for control line or the input line choose to used it. 2. The circuit of a DEMUX is basically the same as for a decoder (TRUE/ FALSE)