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Digital Electronics

Digital Electronics
What is the minimum number of 2 input NAND gates used to perform the function of 2 input OR gate

 1
 3
 2
 4

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Digital Electronics
Logic circuits are

 analog circuits
 hybrid circuits
 digital circuits
 none of these

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Digital Electronics
LSI means

 Large Symbol Integration
 Large Scale Integration
 Large Scale Invertor
 Large Symbol Invertor

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Digital Electronics
The difference between the diagram of a NOR and OR gate is

 OR is more oval than NOR
 OR is more squared than NOR
 OR has got a bubble at its output terminal
 NOR has got a bubble at its output terminal

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Digital Electronics
The voltages corresponding to LOW and HIGH levels respectively are given below. Identify the voltages which correspond to positive logic system.

 1 V and -5 V
 0 V and 5 V
 –1.5 V and – 5 V
 5 V and 0 V

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Digital Electronics
In Boolean algebra, the bar sign (-) indicates ___________.

None of these
AND operation
NOT operation
OR operation

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