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 1 of 6.
Siddiq said:
1 decade ago
Why -ve sign?
Sangeetha said:
1 decade ago
The first no 1 indicates the -ve number.
Eshwar said:
1 decade ago
Yes the first num indicates the negative number so the two 's complement must be a positive number right.
Anuradha said:
1 decade ago
I don't understand this step - 00011011 = 16 + 8 + 2 + 1 = 27. Therefore A = -27.
Derepika said:
1 decade ago
How 16+8+2+1 comes from 00011011 in hexadecimal.
Jitendra said:
1 decade ago
-ve sign is problem here.
According to first no. it should be +ve.
According to first no. it should be +ve.
RAJESH SHAKYA said:
1 decade ago
How can decide fist bit (sign bit or MSB)?
Suman said:
1 decade ago
How we can we get 16+8+2+1?
Akash choudhary said:
1 decade ago
In 2's complement if first digit from left is 1 then it is a -ve number else 0 then +ve number.
Santhoshstebin said:
1 decade ago
0 mean positive value 1.
1 mean negative value -1.
1 mean negative value -1.
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