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Digital Electronics

Digital Electronics
In which of the following base systems is 123 not a valid number?

Base 10
Base 8
Base 3
Base 16

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Digital Electronics
A gate is enabled when its enable input is at logic 1. The gate is

 NOR
 OR
 NAND
 none of these

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Digital Electronics
Which number system has a base of 16

 Decimal
 Hexadecimal
 None
 Octal

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

 INTR.
 RST 6.5.
 TRAP.
 RST 7.5.

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Digital Electronics
Switching circuits are

 hybrid circuits
 analog circuits
 none of these
 digital circuits

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Digital Electronics
XNOR followed by a NOT gate is equivalant to ________ gate

 XNOR
 XOR
 NOR
 OR

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