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Digital Electronics

Digital Electronics
A bubbled NAND gate is equivalent to a

 NOR gate
 NAND gate
 OR gate
 X-OR gate

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Digital Electronics
Why decoder is used in the digital electronics ?

 To convert coded information into non coded form
 It is used to separate address bus and data bus
 To convert non coded information into coded form
None of these

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Digital Electronics
What is the minimum number of two-input NAND gates used to perform the function of 2-input OR gate?

 four
 one
 three
 two

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Digital Electronics
A + Ā is equal to

 1
 0
 A
 Ā

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Digital Electronics
Which of the following logic circuits is the fastest ?

 RTL.
 All have same speed.
 DTL.
 TTL.

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Digital Electronics
Which of the following gates cannot be used as an inverter?

 X-NOR
 AND
 NAND
 NOR

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