Electronics and Communication Engineering - Digital Electronics - Discussion
Discussion Forum : Digital Electronics - Section 1 (Q.No. 22)
22.
The greatest negative number which can be stored is 8 bit computer using 2's complement arithmetic is
Answer: Option
Explanation:
The largest negative number is 1000 0000 = -128.
Discussion:
16 comments Page 1 of 2.
Geetha adainjan said:
1 decade ago
Why 1111 1111= -255 not came here? Please clarify it.
Pratik said:
1 decade ago
It is not largest number.
Rekha.v said:
1 decade ago
The greatest negative number which you can represent using N bit (of course signed) could be -2^(N-1).
So for 8 bit 2^7 = -128.
So for 8 bit 2^7 = -128.
Rekha.v said:
1 decade ago
The greatest negative number which you can represent using N bit (of course signed) could be -2^(N-1).
So for 8 bit 2^7 = -128.
So for 8 bit 2^7 = -128.
Sudipta Majumder said:
1 decade ago
Greatest positive number = 01111111.
Taking 2's complement to get greatest negative number that is = 10000001.
Now put the formula and we get = -127.
Taking 2's complement to get greatest negative number that is = 10000001.
Now put the formula and we get = -127.
Sunanda said:
9 years ago
Greatest positive number is 255, right?
Sandy said:
9 years ago
No, the largest positive no is 127.
132,64,32,16,8,4,2,1.
0 1 1 1 1 1 1 1.
132,64,32,16,8,4,2,1.
0 1 1 1 1 1 1 1.
Shubham said:
8 years ago
For 2's compliment.
The range is -(2^n-1) to +((2^n-1)-1) and this is different in the case of 1's and signed representation.
The range is -(2^n-1) to +((2^n-1)-1) and this is different in the case of 1's and signed representation.
Divyesh Makwana said:
8 years ago
The largest Negative number in 8 bit is 01111111 and 2's complement of it in 10000000 which is -127.
Pavan said:
7 years ago
In 8bit, 11111111 is the largest right?
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