Monitor

This is sometimes called the screen or the VDU; it is the main way of getting the processed data out of the computer. These monitors come in different shapes and sizes.

  This is a CRT monitor. It uses a Cathode Ray Tube (CRT) which contains an electron gun.

The most common size is the 14-inch monitor and the size of the monitor is measured diagonally. 

Although they come in different capabilities in terms of colour output their function is still the same to display information to the user.

The normal PC monitor uses a Cathode Ray Tube (CRT) which contains an electron gun. This shoots a stream of electrons onto a screen coated with a phosphorescent substance.  

 

There are control buttons on the monitor that the user can use to adjust the size, brightness and position of the display area. There is also a power button to turn the monitor on and off. There is a light next to the power button to indicate the status of the monitor, whether on or off.

You should note that switching off the monitor will not affect your information.

The monitor works with a video card, located inside the computer case, to display images and text on the screen. 

The two main types are: cathode ray tube (CRT) and liquid crystal display (LCD) monitors.

The CRT monitor is big, like a tube television, and takes up a lot of desk space; however, it is the least expensive monitor option. The LCD monitor is thin and saves energy, but costs more. Over the years you can expect to see fewer CRT monitors as LCD monitors become the standard. 

 

Your monitor has an on/off button and control buttons that allow you to change your monitor's display. Control buttons are either visible or located behind a small panel. Additionally, some monitors have built-in speakers. 

 

Whenever you shut down your computer remember also to switch off the monitor.  

The CPU can run continuously for days because it has got an in-built fan but the monitor needs to be switched off because of the absence of the in-built fan and can become hot after some time.