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Digital Electronics

Digital Electronics
In which of the following base systems is 123 not a valid number?

Base 10
Base 8
Base 16
Base 3

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Digital Electronics
1s Complement of 11001010 is

 11001011
 00110101
 11001001
 00110111

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

 50 to 100
 < 50
 12 to 99
 < 500

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Digital Electronics
Which one of the following even parity codes are in errors. (I)100110010 (II)011101010 (III)10111111010001010

 Both (I)&(III)
 Only (III)
 Only (II)
 Both (II)&(III)

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Digital Electronics
The number of parity bits in a 12-bit Hamming code is

 5
 4
 8
 6

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Digital Electronics
The universal gate is ___________

OR gate
AND gate
None of these
NAND gate

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