Computer question

[neil_1821]

Hi all,

I have exams coming up and i've been doing some past papers. I have come accross a question and i can't do it, i've looked at the mark scheme and that doesn't tell you how to do it either so i'm wondering if one of you clever chaps might help me so here goes:

The system stores floating point numbers in normalised form using 2's complement, with an 8-bit mantissa and a 4-bit exponent. State the value of 1011 1110 0100 in denary if it represents a two's complement. floating point number.

The answer is -8.25 but i'd like to know how to get there.

Thanks

 

[Drastik]

I didnt understand none of that....

WHat course are you doing?

 

[neil_1821]

Well i'm in year 13 but i'm retaking one fo the modules in year 12, the course i'm taking is purely computing. Extremly hard and i hope i get through it.

 

[neil_1821]

oh yes and i forgot to add that the name of the exam is Unit 4 processing and programming techniques.