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Digital Electronics

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

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

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

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

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Digital Electronics
The voltage levels for positive logic system

 must necessarily be negative
 may be positive or negative
 must necessarily be positive
 must necessarily be 0 V and 5 V

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Digital Electronics
What logic function is produced by adding an inverter to each input and output of an OR gate?

 NOR
 X-OR
 NAND
 AND

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Digital Electronics
The NOR gate is OR gate followed by ___________.

None of these
AND gate
NOT gate
NAND gate

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

Base 10
Base 8
Base 3
Base 16

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