A computer's high-speed storage device. It contains the operating system, the programs and all created files. The hard disk is referred to as the 'C drive'.

The physical parts of a computer, including the system unit, monitor, keyboard and mouse.

The area at the top of a page in a document. Text entered in the header (such as a title) appears on every page of the document.

Usually the F1 key. Pressed to access advice and information on how to perform the task the user is currently engaged in.

To Select a word, a section of text or a group of cells, by clicking and dragging over them using the mouse.