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Digital Electronics

Digital Electronics
The binary number 10101 is equivalent to decimal number ___________.

19
12
21
27

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Digital Electronics
XNOR followed by a NOT gate is equivalant to ________ gate

 NOR
 XNOR
 XOR
 OR

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Digital Electronics
The voltage levels for negative logic system

 must necessarily be positive
 must necessarily be negative
 must necessarily be 0 V and –5 V
 may be negative or positive

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Digital Electronics
In Boolean algebra, the bar sign (-) indicates ___________.

OR operation
None of these
AND operation
NOT operation

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Digital Electronics
Convert the binary number (1111000011110000) to hexadecimal number

 7070
 1010
 F0F0
 5050

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Digital Electronics
When will be the output of an exclusive-OR gate is HIGH ?

 The inputs are different
 All inputs are HIGH
 All inputs are LOW
 The inputs are equal

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