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Digital Electronics

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

 BCD code
 ASCII code
 XS-3 code
 Gray code

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Digital Electronics
Which of the following logic circuits is the fastest ?

 All have same speed.
 DTL.
 RTL.
 TTL.

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Digital Electronics
The binary number 10101 is equivalent to decimal number ___________.

21
12
27
19

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Digital Electronics
How many input and output required for demultiplexer ?

None of these
 one input and many output
 one input and one output
 number of selection inputs and one output

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Digital Electronics
What is the minimum number of NAND gates required to realize an X-OR gate?

 5
 4
 6
 3

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Digital Electronics
The decimal equivalent of hexadecimal number “BEED” is

 48,877
 none
 48,777
 47,877

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