Central Processing Unit (CPU)
The Central Processing Unit (CPU) is the primary component of a computer system that performs most of the processing tasks. It is responsible for executing instructions of a computer program by performing arithmetic, logical, input/output (I/O) operations and controlling the other components of the system. The CPU consists of two main components: the control unit (CU) and the arithmetic logic unit (ALU). The CU fetches instructions from memory and decodes them, while the ALU performs arithmetic and logical operations. The CPU communicates with other components of the system through buses, which are electrical pathways that allow data to be transferred between components. The speed and performance of a CPU are measured in clock cycles, which is the number of instructions it can execute per second.
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