How to work Computer | By Bill Gates | Basic Information
What is Computer ? How to works According to bill Gates!
Printers: Printer are Output devices used to prepare permanent Output devices on paper. Printers can be divided into two main categories: Impact Printers : Impact Printer In this hammers or pins strike against a ribbon and paper to print the text. This mechanism is known as electro-mechanical mechanism. Non-Impact Printers : There printers use non-Impact technology such as ink-jet or laser technology. There printers provide better quality of O/P at higher speed. Impact Printer Two Types: Character Printer : It prints only one character at a time. It has relatively slower speed. Eg. Of them are Dot matrix Printer. Laser Printer: Laser Printer is a type of printer that utilizes a laser beam to produce an image on a drum. The light of the laser alters the electrical charge on the drum wherever it hits. The drum is then rolled through a reservoir of toner, which is picked up by the charged portions of the drum. Finally, the toner is transferred to the paper through a combination o
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