Signed and unsigned numbers

Summary

To represent negative integers in binary we use signed numbers.Signed binary includes negative integers, unsigned binary does not.
There are different methods of implementing the encoding of signed numbers. Two prominant approaches are two’s complement and signed magnitude representation.

Two’s complement
- signed_and_unsigned_numbers, binary addition, Signed magnitude representation
Signed magnitude representation
- signed_and_unsigned_numbers
Instruction Set Architectures
- There have been different, successive generations of x86 corresponding to their word-size: 16-bit, 32-bit, 64-bit. Word size here just means how many bits the processor can work with at a time. A 34-bit processor can operate on values that are 32 bits in length. This means it has 32bit registers, a 32-bit data bus, a 32-bit address bus and so on.