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Digital Electronics

Digital Electronics
An OR gate has 6 inputs. The number of input words in its truth table are

6
64
128
32

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Digital Electronics
The code used in digital systems to represent decimal digits, letters, and other special characters such as + , – , . , * , etc. is

 natural BCD
 hexadecimal
 ASCII
 octal

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Digital Electronics
If two numbers in excess-3 code are added and the result is less than 9, then to get equivalent binary

 0011 is added
 0110 is added
 0110 is subtracted
 0011 is subtracted

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Digital Electronics
A gate is enabled when its enable input is at logic 0. The gate is

 none of these
 NOR
 AND
 NAND

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Digital Electronics
A bubbled NAND gate is equivalent to a

 X-OR gate
 NOR gate
 OR gate
 NAND gate

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Digital Electronics
OR-AND realization of a combinational circuit is equivalent to

 NAND-NOR realization
 NOR-NOR realization
 NAND-NAND realization
 NOR-NAND realization

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