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Digital Electronics

Digital Electronics
Maximum number in decimal that can be represented by 4 bits (binary) is

 4
 7
 16
 15

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

 ASCII code
 Gray code
 BCD code
 XS-3 code

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

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

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Digital Electronics
The implicants which will definitely occur in the final expression are called

 essential prime implicants
 redundent prime implicants
 prime implicants
 selective prime implicants

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Digital Electronics
The boolean algebra is mostly based on

 De Morgans theorem
 Standard theorem
 Boolean theorem
 De Morpans theorem

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Digital Electronics
Fastest memory element is

 RAM
 Hard Drive
 Cache
 ROM

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