(adsbygoogle = window.adsbygoogle || []).push({}); 1. The problem statement, all variables and given/known data

00001101 bin

* 00001000 bin

-----------------------------------

2. Relevant equations

It's a binary subtraction question using 2's complement method and an 8 BIT register.There's no equation than,I guess.

3. The attempt at a solution

^{11111111}<--1's "carried over"

00001101 bin

* 00001000 bin

-----------------------------------

^{11111111}

1111101

+ 1

--------------------------------------

110

000000000 +

------------------------------------

^{11111111}

00000110

+ 00001101

--------------------------------------

11111001

00000110 <----inversion of previous number

I did all this but on my answer sheet it says that the answer is 00000101.Why is this?.

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# Homework Help: Binary subtraction question using 2's complement method and an 8 BIT

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