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Digital Electronics

Digital Electronics
Which of these circuits will give yield carry with more delay 1. Carry look ahead adder 2. Ripple carry adder

 both are same
 2.
 none
 1.

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Digital Electronics
The set of which logic gates is designated as universal gate?

 XNOR, NOR, NAND.
 NOT, OR , AND.
  NOR , NAND.
 XNOR, NOR, NAND.

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Digital Electronics
A digital voltmeter has a read out range from 0 to 999 counts, the resolution is

 1.1 V.
 1 V.
 0.01 V.
  1 mV.

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Digital Electronics
2's Complement of 10101011 is

 01010101
 10101100
 00111100
 10101011

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

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Digital Electronics
Extremely low power dissipation per gate can be gained from

 MOS ICs
 ECL ICs
 TTL ICs
 CMOS ICs

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