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Digital Electronics

Digital Electronics
Which one of the following is 2’s complement of -68?

 11000100
 01111100
 10111100
 00111100

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

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

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Digital Electronics
Which of the following is 1’s complement representation of -34?

 01011101
 11011101
 11011110
 10100010

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Digital Electronics
A system has following negative numbers stored in binary form as shown. The wrongly stored number is

 -89 as 10100111
 -37 as 11011011
 -48 as 11101000
 -32 as 11100000

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Digital Electronics
X + X.Y = ?

 1
 X
 Y
 0

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Digital Electronics
In decimal number system what is MSD

 Mean of all digits
 First digit from right to left
 Middle digit
 First digit from left to right

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