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Digital Electronics

Digital Electronics
The logic expression A + B can be implemented by giving inputs A and B to a two-input

 X-OR gate
 X-NOR gate
 NAND gate
 NOR gate

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Digital Electronics
The output of a logic gate is 1 when all its inputs are at logic 0. The gate is either

 an AND or an X-NOR
 an X-OR or an X-NOR
 an OR or a NAND
 a NAND or a NOR

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Digital Electronics
Latches are ________ circuits.

 pulse triggered
 level triggered
 edge triggered
 count triggered

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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

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

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Digital Electronics
A combinational circuit can be designed using only

 AND gates
 NOR gates
 OR and X-NOR gates
 OR gates

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Digital Electronics
In Boolean algebra A.A is equal to

 2A
 1
 A
 A²

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