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Digital Electronics

Digital Electronics
The state of a flip-flop can be switched by changing its ________ signals.

 output
 input
 triggering
 clearing

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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 2’s complement is used to represent the numbers, then the range will be

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

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Digital Electronics
What logic function is produced by adding an inverter to each input and output of an AND gate?

 X-OR
 NAND
 OR
 NOR

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Digital Electronics
What is the difference between xor gate and exor gate.

 xor and exor are complement of each other
 xor gives one output while exor gives two
 both are same
 xor gives two outputs while exor gives one

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Digital Electronics
The output of a gate is LOW when at least one of its inputs is HIGH. This is true for

 NAND
 AND
 NOR
 OR

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Digital Electronics
The binary equivalent of hexadecimal number 4F2D is

 0100 1111 0010 1100
 0100 1110 0010 1101
 0101 1111 0010 1100
 0100 1111 0010 1101

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