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Digital Electronics

Digital Electronics
The output of a gate is HIGH when at least one of its inputs is LOW. It is true for

 OR
 X-OR
 NOR
 NAND

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Digital Electronics
A device which converts decimal number into BCD form is called

 decoder
 encoder
 code converter
 multiplexer

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Digital Electronics
The boolean algebra is mostly based on

 De Morpans theorem
 De Morgans theorem
 Boolean theorem
 Standard theorem

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Digital Electronics
How many input and output required for demultiplexer ?

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

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Digital Electronics
Which one of the following is 2’s complement of -68?

 01111100
 10111100
 11000100
 00111100

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Digital Electronics
Which one of the following even parity codes are in errors. (I)100110010 (II)011101010 (III)10111111010001010

 Both (II)&(III)
 Both (I)&(III)
 Only (III)
 Only (II)

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