Electronics and Communication Engineering - Digital Electronics - Discussion
Discussion Forum : Digital Electronics - Section 1 (Q.No. 7)
7.
In 2's complement representation the number 11100101 represents the decimal number
Answer: Option
Explanation:
A = 11100101. Therefore A = 00011010 and A' = A + 1 = 00011011 = 16 + 8 + 2 + 1 = 27. Therefore A = -27.
Discussion:
54 comments Page 3 of 6.
Pradeep said:
8 years ago
I agree with the given answer -27.
Satish said:
8 years ago
The Correct option is +27.
Selvamani Kannan said:
8 years ago
For a two's compliment, we add +1 with the ones compliment.
So, from two's compliment to one's compliment we have to subtract -1.
I think +27 is correct.
So, from two's compliment to one's compliment we have to subtract -1.
I think +27 is correct.
Vishesh kumar said:
8 years ago
The correct answer is +27.
i.e option D.
i.e option D.
Harish johnty said:
9 years ago
Here they just asked that 2's compliment of the decimal number is 11100101 so what is that decimal number?
If you see MSBbit is one so the decimal number should be in negative not positive.
If you see MSBbit is one so the decimal number should be in negative not positive.
Arindom said:
9 years ago
Iy should be +27 because the msb obtain after the calculation is 0 which indicates its sign bit as +ve.
Zain said:
9 years ago
It should be +27.
Arun said:
9 years ago
There is no carry bit. If the carry bit present it will be positive or else it will be negative.
Rahul said:
9 years ago
The negative number always represent in 2's complement form. So after calculating 2's complement of the above binary number, it is always negative. So the D option is correct.
Lovish said:
9 years ago
It should be positive.
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