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Digital Electronics

Digital Electronics
What logic function is produced by adding an inverter to each input and output of an AND gate?

 OR
 NOR
 NAND
 X-OR

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Digital Electronics
The main equation for a D flip flop is

 Q=0
 Q=D'
 Q=1
 Q=D

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Digital Electronics
X + X.Y = ?

 X
 1
 Y
 0

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Digital Electronics
"What would happen, if smaller logic modules are utilized for performing logical functions associated with FPGA? A. Propagation delay will increase B. FPGA area will increase C. Wastage of logic modules will not be prevented D. Number of interconnected paths in device will decrease"

C & D
A & D
A & B
B & C

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Digital Electronics
A signed integer has been stored in a byte using 2’scomplement format. We wish to store the same integer in 16-bit word. We should copy the original byte to the less significant byte of the word and fill the more significant byte with

 0
 Equal to the MSB of the original byte
 1
 Complement of the MSB of the original byte

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Digital Electronics
OR-AND realization of a combinational circuit is equivalent to

 NAND-NAND realization
 NAND-NOR realization
 NOR-NAND realization
 NOR-NOR realization

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