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Digital Electronics

Digital Electronics
To add two m-bit numbers, the required number of half adder is

 2m+1
 2m-1
 2m
 2m-1

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Digital Electronics
A Nibble is equal to ________ bit(s)

 1
 4
 8
 2

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Digital Electronics
The decimal equivalent of hexadecimal number of 2A0F is

 17670
 17607
 10767
 17067

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

 0 V and 5 V
 5 V and 0 V
 1 V and 5 V
 –1.5 V and – 0.5 V

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Digital Electronics
Which of these sets of logic gates are designated as universal gates?

 XOR, NOR, NAND.
 OR, NOT, AND.
 NOR, NAND.
 NOR, NAND, XNOR.

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Digital Electronics
The base of the number system for the addition operation 24 + 14 = 41 to be true is

 6
 8
 5
 7

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