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A computer system consists of various hardware components. Each component plays a specific role in computer system. These components are interconnected to each other in such a way so that the computer can perform its functions. Processor: Processor is the main component of a computer system. It controls the operations of the computer and co-ordinates the other components of the computer. It performs all the functions according to the program instructions. It decodes and executes the instructions. It is considered the brain of the computer. It contains a number of special-purpose registers and Arithmetic Logic Unit (ALU). A modem computer system consists of one or more processors. When there is only one processor in a computer system, it is often known as the Central Processing Unit (CPU). Main Memory: Programs and data must be loaded into the main -memory of the computer before their execution. The main part of operating system is also loaded into the main memory during booting pr...
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