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Digital Electronics

Digital Electronics
NOT gates are to be added to the inputs of which gate to convert it to a NOR gate?

 X-NOR
 AND
 NAND
 OR

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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

 6
 4
 2
 8

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Digital Electronics
Which one of the following even parity codes are in errors. (I)100110010 (II)011101010 (III)10111111010001010

 Only (II)
 Both (I)&(III)
 Only (III)
 Both (II)&(III)

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

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

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Digital Electronics
Extremely low power dissipation per gate can be gained from

 CMOS ICs
 ECL ICs
 TTL ICs
 MOS ICs

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Digital Electronics
What is the radix of octal number system ?

 2
 10
 8
 16

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