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Digital Electronics

Digital Electronics
Which of the following is known as a mod-2 adder?

 X-NOR gate
 NOR gate
 X-OR gate
 NAND gate

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Digital Electronics
In decimal number system what is MSD

 Middle digit
 First digit from left to right
 First digit from right to left
 Mean of all digits

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Digital Electronics
The NAND-NAND realization is equivalent to

 OR-AND realization
 NOT-OR realization
 AND-OR realization
 AND-NOT realization

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Digital Electronics
In simplification of a Boolean function of n variables, a group of 2m adjacent 1s leads to a term with

 m – 1 literals less than the total number of variables
 n + m literals
 m + 1 literals less than the total number of variables
 n – m literals

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Digital Electronics
The AND-OR realization of a combinational circuit requires three 3-input AND gates and one 3-input OR gate. This circuit can be designed using

None of these
 three 3-input NAND gates and one 3-input NOR gate
 three 3-input OR gates and one 3-input AND gate
 four input NAND gates only

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Digital Electronics
How many NOR gates are required to obtain AND operation?

 2
 4
 3
 1

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