End of the Chapter

The integer to be subtracted is made negative ...

0111 1000 → 1000 0111 + 1 → 1000 1000

...then added to the other:

10000 000       
 1011 0000  = - 8010
 1000 1000  = -12010
 —————————     ————
 0011 1000     +5610        ???

Since the carry into the most significant column is NOT the same as the carry out, the result is not correct.

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You have reached the end this chapter. You may wish to review the following topics unless your brain has overflowed. Click on a subject that interests you to go to where it was discussed.

• binary addition algorithm The binary addition algorithm
• binary addition algorithm, details Details of the binary addition algorithm.
• hexadecimal addition Hexadecimal addition.
• overflow, unsigned binary addition Overflow in unsigned binary addition.
• sign-magnitude representation Sign-magnitude representation
• two's complement Two's complement representation
• sign bit The sign bit with two's complement representation.
• overflow, two's complement Overflow in two's complement addition.