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Digital Electronics

Digital Electronics
The fan put of a 7400 NAND gate is

8TTL
2TTL
5TTL
10TTL

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Digital Electronics
In Boolean algebra, the bar sign (-) indicates ___________.

NOT operation
AND operation
None of these
OR operation

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Digital Electronics
When will be the output of a NOT gate is HIGH ?

 the input is HIGH
 the input is HIGH and LOW
None of these
 the input is LOW

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

 start time
 run time
 propagation time
 Decay time

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Digital Electronics
Which one of the following is not a vectored interrupt?

 RST 6.5.
 INTR.
 RST 7.5.
 TRAP.

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Digital Electronics
An 8 × 4 ROM contains a decoder of size

 8 × 8
 3 × 4
 8 × 4
 3 × 8

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