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Digital Electronics

Digital Electronics
In Boolean algebra A.A is equal to

 A²
 1
 2A
 A

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Digital Electronics
A three-state buffer has the following output states

 High, Low, Float
 1, 0, float
 Both A and B
 Set, Reset, Halt

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Digital Electronics
A D-flip-flop is said to be transparent when

 the output follows clock
 the output follow input
 the output is HIGH
 the output is LOW

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Digital Electronics
A computer has a word length of 8 bits (including sign). It is required to determine the range of integers that can be stored in the computer. If 1’s complement is used to represent the numbers, then the range will be

 -256 to 256
 -127 to 127
 -256 to 255
 -128 to 127

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Digital Electronics
The inputs of a NAND gate are connected together. The resulting circuit is ___________.

OR gate
AND gate
None of these
NOT gate

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Digital Electronics
AND operation is equivalant to

 Division
 Union
 Intersection
 Both B and C

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