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Digital Electronics

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

 DTL.
 RTL.
 TTL.
 All have same speed.

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Digital Electronics
A bubbled NAND gate is equivalent to a

 NOR gate
 OR gate
 X-OR gate
 NAND gate

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Digital Electronics
An 8-square eliminates

 3 variables
 4 variables
 8 variables
 2 variables

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

 X-NOR
 NAND
 AND
 NOR

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Digital Electronics
An OR gate has 6 inputs. The number of input words in its truth table are

32
64
128
6

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Digital Electronics
Which one of the following is 2’s complement of -68?

 01111100
 00111100
 10111100
 11000100

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