Storage. Main Memory Secondary Memory Different speeds Magnetic Media Optical Media Access Modes . A Computer System . As we already know a computer system is made up of different components such as; the CPU, input devices, output devices, storage devices and others.
Magnetic storage uses magnetic charges to store data. The presence of a magnetic spot represents a 1, whilst the absence represents a 0.
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Optical devices use laser beams to store data. Data is stored on these devices by using laser beams and their reflective properties.