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Digital Electronics

Digital Electronics
A device which converts 2421 code into 8421code is called a

 code converter
 code encoder
 coder
 code decoder

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Digital Electronics
The output of a logic gate is 0 when all its inputs are at logic 1. The gate is either

 a NAND or an X-OR
 a NOR or an X-NOR
 a NAND or an X-NOR
 a NAND or an AND

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Digital Electronics
A multiplexer is a combinational logic circuit used to perform the operation

 XOR-NAND
 AND-AND
 AND-OR
 NOR-OR

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Digital Electronics
A bubbled NAND gate is equivalent to a

 OR gate
 NOR gate
 X-OR gate
 NAND gate

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

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

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Digital Electronics
In the toggle mode a JK flip-flop has

 J = 0, K = 0.
 J = 1, K = 0.
 J = 1, K = 1.
 J = 0, K = 1.

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