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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

 1.
 both are same
 none
 2.

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Digital Electronics
9’s complement of 52784630 is

 48225469
 57316379
 47215369
 58326479

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Digital Electronics
In which of the following base systems is 123 not a valid number?

Base 3
Base 10
Base 8
Base 16

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Digital Electronics
Which of the following is 2’s complement of +12?

 01110011
 00001100
 00001000
 00000011

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Digital Electronics
An EPROM

All of these
 is programmable
 is non volatile
 is of random-access type

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Digital Electronics
The Quine– McClusky method of minimization of a logic expression is a (i) graphical method (ii) algebraic method (iii) tabular method (iv) a computer-oriented algorithm The correct answers are

 (ii) and (iv)
 (i) and (iii)
 (i) and (ii)
 (iii) and (iv)

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