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Digital Electronics

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

 four
 two
 one
 three

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Digital Electronics
The output of a logic gate is 0 when all its inputs are at logic 0. The gate is either

 an OR or an X-NOR
 a NAND or an X-OR
 an OR or an X-OR
 an AND or a NOR

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Digital Electronics
The number FF in base-16 systems will be equal to ________ in binary system.

 11111111
 11101110
 10011001
 10101010

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Digital Electronics
In ULSI, the number of gate circuits per chip is

 > 50,000
 > 1,00,000
 1,00,000 to 10,00,000
 50,000 to 99,999

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Digital Electronics
How many output is high of NOR GATE ?

 4
 1
 3
 2

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

 AND
 none of these
 NOR
 OR

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