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Digital Electronics

Digital Electronics
If a Hexadecimal number needs to convert to binary. For each hexadecimal digit, there will be how many bits

 1
 2
 4
 8

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

 ASCII code
 BCD code
 XS-3 code
 Gray code

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Digital Electronics
A 10 bit A/D conveter is used to digitize an analog signal in the 0 to 6 volt. The maximum peak to ripple voltage that can be allowed in the D.C. supply voltage is

  5.85 mV.
 5 mV.
 10 mV.
  6 mV.

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Digital Electronics
What is the gray code for the binary 101011?

 111110
 110101
 011111
 101011

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Digital Electronics
1 Gigabyte is equal to

 1024 Mbytes
 1024 bits
 1024 kbytes
 1024 bytes

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Digital Electronics
The AND-OR realization of a combinational circuit requires three 3-input AND gates and one 3-input OR gate. This circuit can be designed using

 three 3-input NAND gates and one 3-input NOR gate
 four input NAND gates only
 three 3-input OR gates and one 3-input AND gate
None of these

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