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
+37
-31
+27
-27
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 4 of 6.

Jitendra said:   1 decade ago
-ve sign is problem here.

According to first no. it should be +ve.

Anshika said:   10 years ago
How come it is -ve sign. It should be +ve?

Can anyone explain me?

Santhoshstebin said:   1 decade ago
0 mean positive value 1.
1 mean negative value -1.

Renu said:   9 years ago
How did you get - symbol. Please explain clearly.

Muthupandi said:   7 years ago
I am not getting this, please anyone explain me.
(1)

Derepika said:   1 decade ago
How 16+8+2+1 comes from 00011011 in hexadecimal.

RAJESH SHAKYA said:   1 decade ago
How can decide fist bit (sign bit or MSB)?

Sangeetha said:   1 decade ago
The first no 1 indicates the -ve number.

Vishesh kumar said:   8 years ago
The correct answer is +27.
i.e option D.

B.Mallesh goud said:   10 years ago
Why we use -ve sign instead of +ve sign?


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