29-01-2013, 02:59 PM
REALIZATION OF GATES USING UNIVERSAL BUILDING BLOCKS (NAND ONLY)
UNIVERSAL BUILDING.docx (Size: 10.89 KB / Downloads: 21)
Aim:
To construct logic gates NOT, AND, OR, EX-OR,EX-NOR of basic gates
using NAND gate and verify their truth tables .
Apparatus:
1. IC’s - 7400
2. Electronic Circuit Designer
3. Connecting patch chords.
Procedure:
1. Connect the logic gates as shown in the diagrams.
2. Feed the logic signals 0 or 1 from the logic input switches in different combinations at the
inputs A & B.
3. Monitor the output using logic output LED indicators.
4. Repeat steps 1 to 3 for NOT, AND, OR, EX – OR & EX-NOR operations.
and compare the outputs with the truth tables.
Precautions:
1. All the connections should be made properly.
2. IC should not be reversed.
Result:
Different logic gates are constructed using NAND gates and their truth tables are
verified.