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Digital Electronics

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

 NOR
 X-OR
 NAND
 OR

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Digital Electronics
What is the minimum number of two-input NAND gates used to perform the function of 2-input OR gate?

 one
 two
 three
 four

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Digital Electronics
It is desired to have a 64 × 8 ROM. The ROMs available are of 16 × 4 size. The number of ROMs required will be

 2
 6
 8
 4

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Digital Electronics
The XS-3 code is a

 cyclic code
 weighted code
 error-correcting code
 self-complementing code

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Digital Electronics
X + X.Y = ?

 1
 0
 Y
 X

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

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

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