Introducing Computer Science

PC is a personal computer, it is make by software and hardware, software is the things you can't touch, programs; instead, hardware is everything you can touch, like CPU (which keeps microprocessor, ventilators, cards like graphics card...), screen, keyboard, mouse... Software makes we can understand language of computer because when you type a letter on the keyboard, it understand it like 0 and 1, what is called binary code, then, software 'translate' it into source wich in some operating systems like Linux or Ubuntu can be manipulated by programmers. Finally source is 'translate' again so that user can understands it and it is shown in interface.


There are different types of operating systems. There are some of them that are free and they can be manipulated, like I said before, but there are some that can't be manipulated like Windows or Mac Os, which have a default source. Operating systems that can be manipulate are more sensitive to the virus.