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Digital Electronics

Digital Electronics
Which of the following is 2’s complement of +12?

 00000011
 00001000
 00001100
 01110011

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Digital Electronics
In Boolean algebra A.A is equal to

 A²
 A
 1
 2A

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

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Digital Electronics
A 15-bit Hamming code requires

 5 parity bits
 15 parity bits
 none of these.
 4 parity bits

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Digital Electronics
When will be the output of a NOT gate is LOW ?

 the input is HIGH.
None of these
 the input is LOW.
 the input is HIGH and LOW.

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Digital Electronics
Queue is also known as

 FIFO memory
 LILO memory
 Flash memory
 LIFO memory

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