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Digital Electronics

Digital Electronics
Consider the operation 24+17 = 40 .What is the correct base of number so that operation is correct?

 10
 13
 12
 11

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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

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

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Digital Electronics
The NAND-NAND realization is equivalent to

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

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Digital Electronics
An AND gate will function as OR if

All the inputs are ‘0’
Either of the inputs is “1”
All the inputs to the gates are “1”
All the inputs and outputs are complemente'

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Digital Electronics
The maximum positive and negative numbers that can be represented in one’s complement using n-bits are respectively

 +(2n-1-1),-2n-1
 +(2n-1-1),-(2n-1-1)
 +2n-1,-(2n-1-1)
 None of these

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Digital Electronics
The main equation for a D flip flop is

 Q=D'
 Q=D
 Q=1
 Q=0

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