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Digital Electronics

Digital Electronics
The output of a gate is LOW if and only if all its inputs are HIGH. It is true for

 X-NOR
 AND
 NAND
 NOR

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Digital Electronics
Why encoder is used in the digital electronics ?

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

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Digital Electronics
The number FF in base-16 systems will be equal to ________ in binary system.

 10011001
 11101110
 10101010
 11111111

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Digital Electronics
Which of the following memories uses one transistor and one capacitor as basic memory unit

 None
 SRAM
 DRAM
 Both SRAM and DRAM

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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
An AND gate will function as OR if

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

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