x86

The generic term x86 refers to the "CISC" type instruction set of the most commercially successful CPU architecture in the history of personal computing, used in processors from Intel, AMD, VIA, and others. It derived from the model numbers of the first few generations of CPUs, backward compatible with Intel's original 16-bit 8086 of 1978, most of which were ending in "86".
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Intel 80x86

a type of microprocessor which can execute the X86 instruction set developed by Intel in the early seventies.