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Digital Electronics

Digital Electronics
A device which converts BCD into octal is called

 demultiplexer
 decoder
 code converter
 encoder

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Digital Electronics
Consider the following multiplication: (10w1z) × (15)10 = (y01011001)2 Which one of the following gives appropriate values of w,y and z?

 w = 0,y = 0,z = 1
 w = 1,y = 1,z = 1
 w = 0,y = 1,z = 1
 w = 1,y = 1,z = 0

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Digital Electronics
The number 10000 would appear just immediately after

1111 (binary)
FFFF (hex)
All of these
7777 (octal)

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Digital Electronics
How many input and output required for demultiplexer ?

 one input and one output
None of these
 number of selection inputs and one output
 one input and many output

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Digital Electronics
The logic expression AB can be implemented by giving the inputs A and B to a two-input

 NAND gate
 X-OR gate
 NOR gate
 X-NOR gate

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Digital Electronics
What will be the Boolean expression for an inverter logic gate, where input is A and output is G ?

 A= G
 G = Ā
None of these
 G = A

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