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Digital Electronics

Digital Electronics
In Boolean algebra A.A is equal to

 A²
 2A
 1
 A

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Digital Electronics
The NAND gate is AND gate followed by ___________.

None of these
OR gate
NOT gate
AND gate

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Digital Electronics
Which of the following is 1’s complement representation of +57

 00000001
 11000110
 01000110
 00111001

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Digital Electronics
Which of the following is known as a mod-2 adder?

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

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Digital Electronics
Positive integers must be represented by

 Both A and B
 signed numbers
 None of these
 unsigned number

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

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

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