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Digital Electronics

Digital Electronics
The fast logic family is

  TRL.
  DRL.
  TTL.
  ECL.

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Digital Electronics
When will be the output of a NOT gate is LOW ?

None of these
 the input is HIGH and LOW.
 the input is LOW.
 the input is HIGH.

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Digital Electronics
Which of the following BCD codes with an odd parity bit included in the end of code group, have error in the code? (I)1001010110000 (II)0100011101100 (III)0111110000011 (IV)1000011000101

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

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Digital Electronics
A bubbled OR gate is equivalent to a

 NOR gate
 X-OR gate
 NAND gate
 AND gate

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Digital Electronics
A read only memory in which the present contents must be erased before the new information can be stored is

All of these
 EAROM
 ROM
 PROM

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Digital Electronics
A combinational circuit can be designed using only

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

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