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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 4
 1 and 3

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Digital Electronics
The fast logic family is

  ECL.
  DRL.
  TRL.
  TTL.

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Digital Electronics
A system has following negative numbers stored in binary form as shown. The wrongly stored number is

 -37 as 11011011
 -32 as 11100000
 -48 as 11101000
 -89 as 10100111

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Digital Electronics
The main criterion in the design of a digital circuit is reduction of

 cost
 size
 volume
 weight

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Digital Electronics
Which one of the following even parity codes are in errors. (I)100110010 (II)011101010 (III)10111111010001010

 Both (I)&(III)
 Only (II)
 Both (II)&(III)
 Only (III)

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Digital Electronics
A combinational circuit can be designed using only

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

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