Printer and its type
Printers are Output devices used to prepare permanent Output devices on paper. Printers can be divided into two main categories : Impact Printers : In this hammers or pins strike against a ribbon and paper to print the text. This mechanism is known as electro-mechanical mechanism. They are of two types. Character Printer : It prints only one character at a time. It has relatively slower speed. Eg. Of them are Dot matrix printers. Dot Matrix Printer : It prints characters as combination of dots. Dot matrix printers are the most popular among serial printers. These have a matrix of pins on the print head of the printer which form the character. The Computer memory sends one character at a time to be printed by the printer. There is a carbon between the pins & the paper. The words get printed on the paper when the pin strikes the carbon. There are generally 24 pins. Laser Printer is a type of printer that utilizes a laser beam to produce an image on a drum. The l