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Digital Electronics

Digital Electronics
For 4 bit parallel addition, we need ________ half adder(s) and ________ full adder(s)

 1 and 3
 0 and 3
 0 and 4
 1 and 4

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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 OR gates and one 3-input AND gate
 three 3-input NAND gates and one 3-input NOR gate
 four input NAND gates only

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

Base 3
Base 16
Base 10
Base 8

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Digital Electronics
The momentary change in the output/state of the flip-flops is known as

 trigger
 unstable state
 tri-state
 inverter

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Digital Electronics
Storage of 1 KB means the following number of bytes

964
1000
1064
1024

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Digital Electronics
The inputs of a NAND gate are connected together. The resulting circuit is ___________.

NOT gate
OR gate
AND gate
None of these

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