IGCSE ICT SUPREME RELEVATION.

way of storing information from the computer system i.e, DVD, hard drive operating systems enable users to communicate with computer systems general tasks of operating systems controlling the operation of input, output and backing storage devices supervising the load, running and storage of applications programs dealing with error that occur in applications program maintaining security of the whole computer system maintaining a computer log allowing communications between user and the computer system (user interface) CLI (Command Line Interface) requires user to type in instructions in order to choose options from menus, open software etc. GUI (Graphic User Interface) allows the user to interact with a computer (or any other device) using pictures or symbols (icons) PC/desktop computers general purpose computers made up of separate monitor, keyboard, mouse, and processor unit Advantages of PC spare parts and connections are standardized- low costs desktops have better specifications large casing allows good dissipation of heat build-up