Techy Drift

Basic Elements  At a top level, a computer consists of Memory, Processor and I/O components, with one or more modules of each type. These components are interconnected in some fashion to achieve the main function of the computer which is to execute the programs. Thus, there are four main structural elements: Processor: Actually the main job of the processor is to control the operation of the computer and performs its data processing functions. When there is only one processor, it is often referred to as the Central Processing Unit (CPU). I/O Modules: These are used to move data between the computer and its external environment. The external environment consists of variety of devices, including secondary memory for example disks,communications equipment, and terminals. Main Memory: It stores data and programs. This memory is usually volatile; i.e. the contents of the memory are lost when the computer is shut down. In contrast, the contents of disk memory are retained even when the compu