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Digital Electronics

Digital Electronics
To get an excess-3 code from BCD code

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

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Digital Electronics
A device which converts 2421 code into 8421code is called a

 code encoder
 coder
 code decoder
 code converter

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Digital Electronics
How many numbers are used in the decimal number system?

None of these
 0 to 10
 0 to 9
 1 to 10

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Digital Electronics
What logic function is produced by adding inverters to the inputs of an AND gate?

 OR
 NOR
 X-OR
 NAND

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Digital Electronics
Which of the following is 1’s complement representation of +57

 01000110
 00111001
 11000110
 00000001

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Digital Electronics
When will be the output of an exclusive-OR gate is HIGH ?

 The inputs are equal
 All inputs are LOW
 All inputs are HIGH
 The inputs are different

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