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Digital Electronics

Digital Electronics
The parity of the binary number 11011001 is

 odd
 not known
 even
 same as the number of zeros

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Digital Electronics
The voltage levels for negative logic system

 may be negative or positive
 must necessarily be positive
 must necessarily be 0 V and –5 V
 must necessarily be negative

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Digital Electronics
What logic function is produced by adding inverters to the inputs of an OR gate?

 NAND
 X-NOR
 AND
 NOR

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Digital Electronics
In Boolean algebra A.A is equal to

 2A
 A²
 1
 A

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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
 8
 6
 4

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Digital Electronics
A group of four bits is known as

 Byte
 Nibble
 Bit
 Word

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