The Central Processor Unit (CPU), also known as the Central Processor or Main Processor, is the electronic circuitry in the computer that executes the instructions that make up the computer program. The CPU performs the functions specified by the basic arithmetic, logic, control and input / output (I / O) instruction. The computer industry has used the term "central processing unit" since at least the early 1960s. Traditionally, the term "CPU" refers to a processor, particularly its processing unit and control unit (CU), which separates these core components of the computer from external components such as main memory and I / O circuitry. The form, design and implementation of CPUs have changed over their history, but their basic operation remains virtually unchanged. The main components of the CPU are the Arithmetic Logic Unit (ALU), which performs arithmetic and logic operations, a processor register that supplies operations to the ALU, and the control unit that stores the results of ALU operations and controls the embryos. (From memory) and orchestration execution. Follow the instructions by specifying the coordinate operation of ALU, registers and other components. Most modern CPUs are microprocessors, where the CPU is in a single metal-oxide-semiconductor (MOS) integrated circuit (IC) chip. An ICU containing a CPU may include memory, peripheral interfaces, and other components of a computer; Such integrated devices are called various types of microcontrollers or systems on the chip (SoC).
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