- #1
KongMD
- 10
- 0
Homework Statement
+35 + -80 with only 8-bits using sign-magnitude representation
Homework Equations
The Attempt at a Solution
Why is this possible? Allowing for one sign bit, the maximum range (in my mind) should be -63 < N < 63. I can see from my notes, however, that the limits of an 8-bit addressing scheme for sign-magnitude representation is -127 < N < 127. How can the left-most bit be both the sign and part of the number?! I'm not asking for anyone to do the problem for me, but I just want to understand why the left-most bit can perform both functions.
EDIT: I think I figured it out. 80 can be represented in 7-bits - I must've had my counting off somewhere. Sorry!
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