Different Types of Printers

            Many different types of printers are in use today. Two primary technologies used for printing are impact printing and non-impact printing. Impact Printers use a print head containing a number of metal pins which strike an inked ribbon placed between the print head and the paper. The non-impact printers are much quieter than impact printers as their printing heads do not strike the paper. The Most Common Printer Types Are: Dot matrix printers, Ink-jet printers, Laser printers.  Dot Matrix Printers               These printers work by firing a matrix of tiny pins (which are located in the...

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Different Types of Display Screens

CRT Monitor                   A cathode-ray tube and associated electronics connected to the video output of a computer. These have higher resolution than TVs. Lager monitors with high resolution are used for specialized application such as desktop publishing and CAD. LCD (Liquid Crystal Display) Monitor                LCDs are screens made from two glass/plastic plates with liquid in between. LCDs are commonly used for calculators and laptop computers, as they are far flatter than is possible with cathode ray screens used in TVs and Standard computer monitors. Main difference...

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Different Types of Output Devices

             Output devices translate information processed by the computer into a form that either humans or other machines can understand. There are a variety of output devices, which can be connected to a computer. Some of the common output devices are explained in the following sections. Monitor             The most common form of output is the computer screen. It is more correctly called 'monitor' and sometimes referred to as the visual display or VDU.              The quality of a computer monitor is based on the following properties: Resolution: Resolution is the number of pixels, which the screen can display. A 'pixel' is the...

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