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 5 of 6.
Sneha said:
8 years ago
If carry is generated find 2's complement of the answer to get final result,
If carry is not generated give negative sign and write the value.
If carry is not generated give negative sign and write the value.
Priyajit Pal said:
8 years ago
Negative numbers are always represented in 2's compliment form. That's why the original no must be negative.
Veer said:
7 years ago
How it comes in negative.
Mannu Jha said:
7 years ago
The MSB holds the sign.
Basava Prabhu said:
7 years ago
2's complement means only negitive number. If we take 2's complement of 011 then it means negitive of 011.
Aparna said:
7 years ago
I can't understand it clearly, Please give me the explanation in detail.
(2)
Muthupandi said:
7 years ago
I am not getting this, please anyone explain me.
(1)
Abhishek B Revankar said:
6 years ago
Carry 1 indicates a positive number.
Carry 0 indicates a negative number.
Hence after adding 1 to the complement, the carry remains 0.
Carry 0 indicates a negative number.
Hence after adding 1 to the complement, the carry remains 0.
(1)
Anonymous said:
6 years ago
Explanation and answer are wrong.
Number with Most Significant digital represents a negative number i.e.
-1*128+1*64+1*32+0*16+0*8+1*4+0*2+1*1.
=-128+64+32+4+1=-27 (which is original number).
Now, 2's complement of the number will be:
1's C: 00011010.
2's C: 00011011.
Binary Equivalent: 16+8+2+1=27 (which is required answer).
Number with Most Significant digital represents a negative number i.e.
-1*128+1*64+1*32+0*16+0*8+1*4+0*2+1*1.
=-128+64+32+4+1=-27 (which is original number).
Now, 2's complement of the number will be:
1's C: 00011010.
2's C: 00011011.
Binary Equivalent: 16+8+2+1=27 (which is required answer).
(6)
Anubhav Dandapat said:
5 years ago
Is the 1's complement and 2's complement are the complement each other?
Because the procedure is same, if we find the 2's complement we use the same procedure and here also use the same procedure.
Because the procedure is same, if we find the 2's complement we use the same procedure and here also use the same procedure.
(1)
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