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Digital Electronics

Digital Electronics
In the boolean algebra, a variable has ________ different state(s)/value(s).

 1
 2
 4
 3

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Digital Electronics
When will be the output of a NOT gate is LOW ?

 the input is HIGH and LOW.
 the input is HIGH.
None of these
 the input is LOW.

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Digital Electronics
To add two m-bit numbers, the required number of half adder is

 2m
 2m+1
 2m-1
 2m-1

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Digital Electronics
(44)8 in BCD 8421 code is

 00110110
 01000100
 01100011
 00100100

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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
 octal
 ASCII

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Digital Electronics
A bubbled NAND gate is equivalent to a

 NAND gate
 OR gate
 NOR gate
 X-OR gate

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