[k.s110]

I think the answer for the following question is B...because when I use the conversion technique -89 converts to 10100111 as two complement:

some clarification would help my uncertainty

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This post has been edited by modi123_1: 25 February 2013 - 05:02 PM

[tlhIn`toq]

We're not going to provide answers for a examine.

[k.s110]

k.s110, on 25 February 2013 - 05:00 PM, said:

I think the answer for the following question is B...because when I use the conversion technique -89 converts to 10100111 as two complement:

some clarification would help my uncertainty

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hmm are you serious?..exam? I don't understand I was asking for help this forum says Theory help as well..all I'm doing is presenting questions and trying to find the answer? never knew that wasn't allowed..I thought novice CS members could find help..without being accused..and ive actually presented an answer if i'm wrong you could just tell me what I am doing wrong the method I used to solve the above was:

using this example:

Two's complement is not a complicated scheme and is not well served by anything lengthly. Therefore, after this introduction, which explains what two's complement is and how to use it, there are mostly examples.

Two's complement is the way every computer I know of chooses to represent integers. To get the two's complement negative notation of an integer, you write out the number in binary. You then invert the digits, and add one to the result.

Suppose we're working with 8 bit quantities (for simplicity's sake) and suppose we want to find how -28 would be expressed in two's complement notation. First we write out 28 in binary form.

00011100

Then we invert the digits. 0 becomes 1, 1 becomes 0.

11100011

Then we add 1.

11100100

That is how one would write -28 in 8 bit binary.

I saw how he got -28 and applied it to this question to get -89 all i wanted to do is assure myself of the answer.

sorry if im doing anything wrong just tel me and I will stop =]

[tlhIn`toq]

k.s110, on 26 February 2013 - 06:15 PM, said:

hmm are you serious?..exam?

Looks like a question from a take home exam or an an on-line course. Doesn't it?

Its not my call. That's up to the forum leader to decide.

As for the question you asked...

Quote

some clarification would help

What exactly was the question? Because all I see is "Some clarification would help." With what part? Because that's so vague that it seems like you're really asking, "Explain the whole concept" which I'm sure was covered in your book or by your teacher. So rather than ask for an entire chapter of explanation on binary numbers - is there a specific part that confuses you?