LOGIC DESIGN LABORATORY MANUAL - VTU e-Learning Centre
LOGIC DESIGN LABORATORY MANUAL - VTU e-Learning Centre
LOGIC DESIGN LABORATORY MANUAL - VTU e-Learning Centre
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Logic Design Laboratory Manual 29<br />
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3) TO COMPARE THE GIVEN DATA USING 7485 CHIP.<br />
A B Result<br />
A3 A2 A1 A0 B3 B2 B1 B0<br />
0 0 0 1 0 0 0 0 A > B<br />
0 0 0 1 0 0 0 1 A = B<br />
0 0 0 0 0 0 0 1 A < B<br />
PROCEDURE:<br />
• Check all the components for their working.<br />
• Insert the appropriate IC into the IC base.<br />
• Make connections as shown in the circuit diagram.<br />
• Verify the Truth Table and observe the outputs.<br />
RESULT: One bit, two bit and four bit comparators are verified using basic gates and<br />
magnitude comparator IC7485<br />
VIVA QUESTIONS:<br />
1) What is a comparator?<br />
2) What are the applications of comparator?<br />
3) Derive the Boolean expressions of one bit comparator and two bit comparators.<br />
4) How do you realize a higher magnitude comparator using lower bit comparator<br />
5) Design a 2 bit comparator using a single Logic gates?<br />
6) Design an 8 bit comparator using a two numbers of IC 7485?
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