Saturday, December 25, 2010

Digital circuit Lab Manual

                                            MULTIPLEXER


AIM:
        To construct and verify the operation of multiplexer circuit using logic
         gates.

APPARATUS REQUIRED:

S.NO
COMPONENTS
RANGE
QUANTITY
1
Digital Trainer Kit

1
IC 7404

1
3
IC 7408

1
4
IC 7432

1
5
Connecting wires

As required

         





CIRCUIT DIAGRAM:

    4-to-1 Multiplexer



Logic diagram


PROCEDURE:

  1. Circuit connections are given as per the circuit diagram.
  2. The +5V DC power supply is properly connected to Vcc and GND
       pins(14 & 7) of each IC.
  3. Logical input conditions are given as per the Function Table.
  4. Logical outputs are observed and verified.



RESULT:
    
  Thus the Multiplexer circuit is constructed and the output is verified using the Function Table.
 ------------------------------------------------------------------------------------------------------

SHIFT REGISTER


AIM:
         To construct and verify the operation of a 4 bit serial in parallel out shift register.


APPARATUS REQUIRED:

S.NO
COMPONENTS
RANGE
QUANTITY
1
Digital Trainer Kit

1
IC 7474

2
3
Connecting wires

As required








CIRCUIT DIAGRAM:

            4 bit Serial in Parallel out shift register


Truth Table:

            
Clock
Serial i/p
Q1
Q2
Q3
Q4
0
1
2
3
4
      0
      1
      0
      1
      0
0
1
0
1
0
0
0
1
0
1
0
0
0
1
0
0
0
0
0
1



PROCEDURE:

1. Circuit connections are given as per the circuit diagram.
2. The +5V DC power supply is properly connected to Vcc and GND pins
   (14 & 7) of each IC.
3. The pulse generator is connected to CLK inputs of all the Flip Flops.
4. The data input (1010)to verify the truth table is given to D input of the
     Flip Flop and clock pulse is given.
5. The outputs are verified from the ON or OFF condition of the LED.



RESULT:

    Thus the 4 bit serial in parallel out Shift Register circuit is constructed and the output is verified using the Truth Table.

 -----------------------------------------------------------------------------------------

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