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Digital Electronics

Digital Electronics
Four ROM chips of 16 × 4 size have their address buses connected together. This system will be of size

 32 × 8
 64 × 4
 256 × 1
 16 × 16

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Digital Electronics
Positive integers must be represented by

 None of these
 Both A and B
 signed numbers
 unsigned number

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Digital Electronics
The address bus with a ROM of size 1024 × 8 bits is

 16 bits
 8 bits
 10 bits
 12 bits

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Digital Electronics
Which of the logical operations is represented by the + sign in Boolean algebra ?

 OR
 NAND
 NOT
 AND

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Digital Electronics
What is the requirement of fullsubstractor circuit ?

 Two inputs and three outputs
 Three inputs and one output
 Three inputs and two outputs
 Two inputs and two outputs

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

 start time
 propagation time
 Decay time
 run time

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