Hardware and software, system and application software, operating systems, types of computer, analogue vs digital data, and emerging technologies.
Hardware and software
A computer system is made up of hardware and software.
Hardware — the physical components you can touch (CPU, RAM, hard disk, keyboard, monitor, printer). Hardware is internal (CPU, motherboard, RAM, graphics/sound cards, internal storage) or external (monitor, keyboard, mouse, printer, external drives).
Software — the programs and instructions that tell the hardware what to do. Software cannot be touched.
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