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Digital Electronics

Digital Electronics
The logic expression AB can be implemented by giving the inputs A and B to a two-input

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

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Digital Electronics
At which the digital data can be applied to a a gate is known as ________ frequency.

 Run-time
 Propagation
 Operating
 Truth

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Digital Electronics
Among the logic families, the family which can be used at very high frequency greater than 100 MHz in a 4 bit synchronous counter is

CMOS
ECL
TTLAS
TTLLS

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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

 ROM
 PROM
 EAROM
All of these

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Digital Electronics
In Boolean algebra AND is represented by

 /
 +
 -
 ×

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Digital Electronics
The output of a NAND gate is low

 only when at least one input is low
 only when all the inputs are high
 only when at least one input is high
 only when all the inputs are low

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