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Digital Electronics

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

 Gray code
 ASCII code
 XS-3 code
 BCD code

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Digital Electronics
Choose the option which is not a code conversion standard

 BCD code
 Gray code
 Excess-3 code
 Truth code

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Digital Electronics
The set of which logic gates is designated as universal gate?

 XNOR, NOR, NAND.
 XNOR, NOR, NAND.
  NOR , NAND.
 NOT, OR , AND.

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Digital Electronics
ASCII code is a

 10-bit code
 7-bit code
 8-bit code
 5-bit code

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Digital Electronics
An 8 × 4 ROM contains a decoder of size

 8 × 8
 3 × 4
 8 × 4
 3 × 8

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Digital Electronics
NAND. gates are preferred over others because these

provide maximum density in a chip.
have lower fabrication area
can be used to make any gate
consume least electronic power

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