C++ Programming tutorial #5 : Exploring the "obvious" (8086 instructions DIV/SUB)
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Digging further into the properties of DIV, leads to other questions. More clarification on the divide overflow exception is offered. This leads to deeper questions about "obvious" things such as "how does a CPU represent negative numbers" and how does subtraction work? More specifically: "How do you 'teach' a computer to do an "obvious" thing like subtraction.