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Digital Electronics

Digital Electronics
The most suitable gate to check whether the number of 1s in a digital word is even or odd is

 AND, OR, and NOT
 X-OR
 NAND
 NOR

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Digital Electronics
The following code is not a BCD code.

 XS-3 code
 Gray code
 8421 code
 all of these

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Digital Electronics
A read only memory in which the present contents must be erased before the new information can be stored is

All of these
 PROM
 ROM
 EAROM

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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

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

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Digital Electronics
Which of the following gate is a two-level logic gate

EXCLUSIVE OR gate
NAND gate
NOT gate
OR gate

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Digital Electronics
Digital computers are more widely used as compared to analog computers, because they are

Less expensive
Easier to maintain
Useful over wider ranges of problem types
Always more accurate and faster

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