A computer system consists of two major elements: hardware and software Computer hardware is the collection of all the parts you can physically touch Computer software, on the other hand, is not something you can touch Software is a set of instructions for a computer to perform specific operations You need both hardware and software for a computer system to work 10 examples of computer hardware are :: 1 Monitor 2 Motherboard 3 CPU(Microprocessor) 4 Main memory(RAM) 5 Expansion cards 6 Power supply unit 7 Optical disc drive 8 Hard disk drive (HDD) 9 Keyboard 10 Mouse