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Digital Electronics

Digital Electronics
A demultiplexer is a

 N-to-N device
 1-to-1 device
 1-to-N device
 N-to-1 device

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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

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

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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

 3
 1
 2
 4

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Digital Electronics
How many entries will be in the truth table of a 3 input NAND gate ?

 9
 3
 6
 8

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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

 ASCII
 natural BCD
 hexadecimal
 octal

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Digital Electronics
A group of four bits is known as

 Byte
 Bit
 Nibble
 Word

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