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Digital Electronics

Digital Electronics
It is desired to have a 64 × 8 ROM. The ROMs available are of 16 × 4 size. The number of ROMs required will be

 4
 2
 8
 6

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Digital Electronics
The time required for a gate to change its output is called as

 propagation time
 run time
 Decay time
 start time

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Digital Electronics
Most of the digital computers do not have floating point hardware because

Floating point hardware is costly
Of no specific reason
It is slower than software
It is not possible to perform floating point addition by hardware

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Digital Electronics
A multiplexer is a

 1-to-N device
 N-to-N device
 N-to-1 device
 1-to-1 device

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

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

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Digital Electronics
Which of the following is known as a mod-2 adder?

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

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