Central Processing Unit (CPU)

The CPU is capable of executing the instructions that are stored in memory, carrying out arithmetic operations, and performing data transfers. Larger computers have several processors (CPUs). It is responsible for interpreting and executing most of the commands from the computer's hardware and software. It is often called the "brains" of the computer. The main unit inside the computer is the CPU. This unit is responsible for all events inside the computer. It controls all internal and external devices, performs arithmetic and logic operations. The operations a microprocessor performs are called the instruction set of this processor. The instruction set is "hard wired" in the CPU and determines the machine language for the CPU.