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Digital Electronics

Digital Electronics
Which of the following is not a transmission medium?

  Modem.
 Coaxial cables.
 Telephone lines.
 Microwave systems.

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

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Digital Electronics
(1D)16 in BCD 8421 code is

 00100100
 00011101
 00011111
 00101001

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Digital Electronics
In binary number system the first digit (bit) from right to left is called as

 Last Bit
 LSB, Least Significant Bit
 First Bit
 MSB, Most Significant Bit

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Digital Electronics
A demultiplexer is a

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

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

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

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