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Digital Electronics

Digital Electronics
Positive integers must be represented by

 None of these
 Both A and B
 unsigned number
 signed numbers

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Digital Electronics
What is the minimum number of NAND gates required to realize an X-OR gate?

 5
 4
 3
 6

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Digital Electronics
A gate is disabled when its disable input is at logic 0. The gate is

 NOR
 OR
 AND
 none of these

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Digital Electronics
The hex address of the 256th memory location is

 00100
 000FF
 001FF
 00FFF

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Digital Electronics
A multiplexer is a combinational logic circuit used to perform the operation

 NOR-OR
 AND-OR
 AND-AND
 XOR-NAND

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Digital Electronics
Most of the digital computers do not have floating point hardware because

It is not possible to perform floating point addition by hardware
Of no specific reason
Floating point hardware is costly
It is slower than software

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