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Example of binary subtraction of Negative number
Case 2. Negative number is more than the positive number ( i e, answer is negative)
Example : Subtract 9210 ( 10111002 ) from 4510 ( 1011012).
Solution : write both numbers in 8 bit form
00101101 (4510)
01011100 (9210)
1 s complement of the negative number 10100011
Add 1 1
2 complement of the negative number 10100100
Adding 2 s complement of the negative number with the first (positive ) number,
+10100100( -9210)
11010001(-4710)
No carry means the answer is negative and is in 2 complement form i e, 1101 0001 is 2 complement of 001011112, u e 7410 means the answer is -4710.
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