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Digital Electronics

Digital Electronics
A bubbled NAND gate is equivalent to a

 X-OR gate
 NOR gate
 NAND gate
 OR gate

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Digital Electronics
A combinational circuit can be designed using only

 NOR gates
 AND gates
 OR and X-NOR gates
 OR gates

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

 XS-3 code
 ASCII code
 BCD code
 Gray code

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Digital Electronics
Which of the logical operations is represented by the + sign in Boolean algebra ?

 NOT
 OR
 NAND
 AND

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

 essential prime implicants
 prime implicants
 redundent prime implicants
 selective prime implicants

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Digital Electronics
The 2s complement of 17 is

 101110.
 110001.
  101111.
 111110.

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