Question: 45 is that number which when added to 45 gives...
Question details
45 is that number which when added to +45 gives zero. Assuming we are using eight bits to represent a number calculate the two’s complement of 45. First replaces 1’s with 0’s and vice versa.
0 
0 
1 
0 
1 
1 
0 
1 
Copy the result above into the top row below and then add 1 to your result.
+ 
0 
0 
0 
0 
0 
0 
0 
1 
Copy the result above into the second row below and add to demonstrate that 45 + (45) = 0.
0 
0 
1 
0 
1 
1 
0 
1 

+ 

0 
0 
0 
0 
0 
0 
0 
0 
Repeat the steps above to find –75 (0’s >1’s)
And add 1.
+ 
0 
0 
0 
0 
0 
0 
0 
1 
Next, add 45 and –75.
+ 

Does the answer above make sense? How do you know?