we are a supplier of Antec Twelve Hundred CPUA central processing unit (CPU) (formerly also referred to as a central processor unit[1]) is the hardware within a computer that carries out the instructions of a computer program by performing the basic arithmetical, logical, and inputoutput operations of the system. The term has been in use in the computer industry at least since the early 1960s.[2] The form, design, and implementation of CPUs have changed over the course of their history, but their fundamental operation remains much the same.