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Digital Electronics

Digital Electronics
Which of the following is 2’s complement of +12?

 00000011
 00001100
 01110011
 00001000

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Digital Electronics
The number of Boolean functions that can be generated by n variables is equal to

22n
2n
2n
2n-1

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

 AND-AND
 AND-OR
 XOR-NAND
 NOR-OR

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

 100 to 999
 < 10,000
 1000 to 10,000
 100 to 9,999

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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
 4
 2
 3

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Digital Electronics
The codes in which each successive code word differs from the preceding one in only one bit position are called

 sequential codes
 BCD codes
 self-complementing codes
 cyclic codes

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