Hello everyone, i'm alittle confused, we have an exam tomarrow and i want to make sure i'm doing this right. I'm suppose to do the following:(adsbygoogle = window.adsbygoogle || []).push({});

Perform the indicated subtraction with the following unsigned binary numbers by taking the 2's compliment of the subtrahend.

so for one of them:

10110 - 1111

I take the 2's compliment of 1111 which is:

1's compliment: 0000

2's compliment: 0000 + 1 = 0001

now i add 0001 to 10110

10110

+0001

=

10111

now since i'm only adding a 4 bit number to a 5 bit number my final answer will only still be in 4 bits right? so it would be

0111 as the final answer right?

I used a binary calculator and it said the answer is 111, but i think it just wasn't programmed to included the 0 infront.

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# Homework Help: Binary adding/subtracting, am i doing this right?

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