Digital Electronics
The devices commonly used for making digital circuits are

 mechanical switches
 contact switches
 relays
 semiconductor devices

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Digital Electronics
In K-map simplification, a group of four adjacent 1s leads to a term with

 three literals less than the total number of variables
 one literal less than the total number of variables
 four literals less than the total number of variables
 two literals less than the total number of variables

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Digital Electronics
Which of the following notations have two representations of zero? (I) 1’s complement with radix of number being 2 (II) 7’s complement with radix of number being 8 (III) 9’s complement with radix of number being 10 (IV) 10’s complement with radix of number being 10 Select the correct answer using the codes given below:

 (I), (II) & (III)
 (I), (II) & (IV)
 (I) & (III)
 (II), (III) & (IV)

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