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Digital Electronics

Digital Electronics
X OR X' will result

 X'
 0
 1
 X

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

Base 16
Base 8
Base 3
Base 10

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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

 four input NAND gates only
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

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Digital Electronics
Why small bubble is given on the output of the NAND gate symbol ?

None of these
 Open collector output
 Output is inverted
 Tristate

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Digital Electronics
Which of these sets of logic gates are designated as universal gates?

 OR, NOT, AND.
 XOR, NOR, NAND.
 NOR, NAND, XNOR.
 NOR, NAND.

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Digital Electronics
A byte is equal to ________ bits.

 4
 8
 16
 32

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