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Digital Electronics

Digital Electronics
Which of the following codes is known as the 8421 code?

 XS-3 code
 BCD code
 Gray code
 ASCII code

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Digital Electronics
One bit full adder has ________ inputs

 2
 3
 any number
 4

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

 AND-AND
 XOR-NAND
 AND-OR
 NOR-OR

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Digital Electronics
In VLSI, the number of gate circuits per chip is

 < 10,000
 50,000 to 99,999
 10,000 to 99,999
 > 10,000

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

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

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Digital Electronics
A multiplexer is a

 1-to-1 device
 N-to-1 device
 N-to-N device
 1-to-N device

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