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Digital Electronics

Digital Electronics
How many bits are required to store one BCD digit ?

 3
 4
 2
 1

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Digital Electronics
In simplification of a Boolean function of n variables, a group of 2m adjacent 1s leads to a term with

 n – m literals
 n + m literals
 m – 1 literals less than the total number of variables
 m + 1 literals less than the total number of variables

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Digital Electronics
The fan put of a 7400 NAND gate is

2TTL
5TTL
10TTL
8TTL

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Digital Electronics
For a code to be self-complementing, the sum of all its weights must be

 6
 10
 9
 12

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

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

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

 0 and 3
 0 and 4
 1 and 4
 1 and 3

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