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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?

 OR
 NAND
 X-NOR
 AND

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Digital Electronics
16’s complement of BABA is?

 4445
 4546
 4446
 4544

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Digital Electronics
A three-state buffer has the following output states

 Set, Reset, Halt
 High, Low, Float
 1, 0, float
 Both A and B

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Digital Electronics
What is the minimum number of NOR gates required realizing an X-OR gating?

 3
 5
 4
 6

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Digital Electronics
Four ROM chips of 16 × 4 size have their address buses connected together. This system will be of size

 32 × 8
 64 × 4
 16 × 16
 256 × 1

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Digital Electronics
A read only memory in which the present contents must be erased before the new information can be stored is

 PROM
All of these
 EAROM
 ROM

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