Application Of A Desktop Computer

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IT user fundamentals

Starting up
The on/off power switch for modern PCs is on the front of the case. It is usually the largest button. The power switch for a laptop will be seen when the screen is lifted. Press and release the power switch to start the computer. A desktop computer with a separate monitor will have a separate on/off switch. Switch on the monitor before switching on the computer. When the computer starts, it will go through an automatic start-up sequence, known as the ‘bootstrap’ sequence. While this is happening, various texts will appear on the screen. If the machine is not connected to a network, the user will be able to access programs at this point.

Closing down
You should almost never switch off a computer
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Windows - An application opened on the desktop is shown in a window. Windows can be moved, overlapped and have their size changed.
Controls - The most important input controls are the keyboard and the mouse. The mouse is moved by hand over a flat surface to control the position of a cursor on the screen. The shape of the cursor varies depending on the task; the most common shape is an arrow the. Job of the mouse is to perform an action on the screen that makes the computer do something. To do this, put the tip of the arrow over something on the screen, and press and release the left mouse button once (known as ‘clicking’) or twice, rapidly (known as ‘double-clicking’). By pressing and holding down the left mouse button and then moving (dragging) the mouse, you can also use the mouse to make a selection, move a window or an object. If something is moved in this way, it is known as ‘drag-and-drop’.
Keyboard - The main job of the keyboard is to enter text, but you can also use combinations of keys to do some of the mouse jobs.

On-screen controls – Certain applications have on-screen controls to let the user work with the application. Such as “file”, “View”, “Edit” and “Tools”. Clicking on these tabs gives the user access to the programs settings and features.

Select and adjust system settings as appropriate to needs

Display - The space available on the computer desktop depends on the size of the monitor (computer screen) and on its
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