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Digital Electronics

Digital Electronics
A half adder is a ________ circuit.

 Sequential
 None
 Both A and B
 Combinational

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Digital Electronics
A bubbled AND gate is equivalent to a

 X-OR gate
 NAND gate
 NOR gate
 OR gate

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Digital Electronics
The voltages corresponding to LOW and HIGH levels respectively are given below. Identify the voltages which correspond to positive logic system.

 0 V and 5 V
 1 V and -5 V
 –1.5 V and – 5 V
 5 V and 0 V

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Digital Electronics
What is the gray code for the binary 101011?

 111110
 011111
 101011
 110101

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Digital Electronics
Which is the example of digital device from the given option ?

 Thermistors
 Sensors
 Record players
 Microprocessors

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Digital Electronics
In a read-only memory information can be stored

 by the user only once during its life time
 by the user a number of times
 in any of the above ways depending upon the type of memory
 at the time of fabrication

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