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Digital Electronics

Digital Electronics
The decimal equivalent of the highest possible address for an 8-bit address bus is

 128
 256
 255
 8

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Digital Electronics
What is/are the configurable functions of each and every IOBs connected around the FPGA device from the operational point of view?

Tristate output operation
All of these
Bi-directional I/O pin access
Input operation

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Digital Electronics
When will be the output of a NOT gate is LOW ?

None of these
 the input is HIGH and LOW.
 the input is HIGH.
 the input is LOW.

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

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

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Digital Electronics
What is the minimum number of 2 input NAND gates used to perform the function of 2 input OR gate

 1
 2
 4
 3

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Digital Electronics
8421 code is

 weighted code
 non-weighted code
 alphanumeric code
 self-complementing code

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