x86 is an Intel CPU architecture that originated with the 16-bit 8086 processor in 1978. Today, the term x86 is used generally to refer to any 32-bit processor compatible with the x86 instruction.
x86 is a family of instruction set architectures[a] based on the Intel 8086 microprocessor and its 8088 variant. The 8086 was introduced in 1978 as a fully 16-bit extension of Intel's 8-bit 8080 microprocessor, with memory segmentation as a solution for addressing more memory than can be covered by a plain 16-bit address. The term "x86" came into being because the names of several successors to Intel's 8086 processor end in "86", including the 80186, 80286, 80386 and 80486 processors. https://en.wikipedia.org/wiki/X86
