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Digital Electronics

Digital Electronics
The number of Boolean functions that can be generated by n variables is equal to

2n
22n
2n-1
2n

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

 NOR
 NAND
 X-OR
 AND

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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

 4
 2
 6
 8

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Digital Electronics
Combinations that are not listed for the input variables are

 Carry
 Overflow
 Don't Care
 Borrow

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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
EBCDIC code is a

 7-bit code
 5-bit code
 10-bit code
 8-bit code

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