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Digital Electronics

Digital Electronics
For 4 bit parallel addition, we need ________ half adder(s) and ________ full adder(s)

 0 and 4
 0 and 3
 1 and 3
 1 and 4

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Digital Electronics
It is desired to have a 64 × 8 ROM. The ROMs available are of 16 × 4 size. The number of ROMs required will be

 8
 2
 4
 6

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Digital Electronics
Excess-3 code is known as

Weighted code
Self-complementing code
Algebraic code
Cyclic redundancy code

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Digital Electronics
A combinational circuit can be designed using only

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

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Digital Electronics
The output of a logic gate is 0 when all its inputs are at logic 0. The gate is either

 an OR or an X-NOR
 a NAND or an X-OR
 an AND or a NOR
 an OR or an X-OR

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Digital Electronics
What will be Excess - 3 code for decimal ( 584 )?

 (1011 0111 1000).
 (1000 0111 1110).
  (1000 1011 0111).
  (0111 0100 1000).

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