Output Devices

• Computer systems provide output to decision makers at all levels of an organization to solve business problems on a competitive opportunity.
• Output comes in various forms including images, videos, audio and even digital data.
• The most common output devices are:
1. Display monitor: a TV like screen device which output what the computer displays. However a monitor is different to TV as it has the ability to display high resolutions at a high frequency.
2. CRT: Cathode Ray Tubes are the most common form of display devices. CRT's work by firing electrons at a screen using an electron gun. However these devices are bulky as they require the electron gun to be at leaset 1 foot away from the screen. 
3. LCD: Liquid Crystal Display units are much more popular as they are much more compact and versatile when compared to a CRT.  LCD's were originally developed on laptops but have become common plane on PCs.
4. Printers and plotters: are devices that print hard copies of selected computer contents to paper. Printers come in various speeds, quality and size. Plotters are by far the largest and are generally used for design work such as blue prints and schematics.