Printers
What is a Printer? A printer is an external hardware output device responsible for taking electronic data stored on a computer or computing device and generating a hard copy of that data. Printers are one of the most commonly used peripherals on computers and are commonly used to print text and photos. The picture to the right is an example of a computer printer, the WeP BP 85T retail billing printers. Impact Printers/ DOT Matrix Printers & Non Impact Printers Impact printers produce a printed page by striking an inked ribbon with a dot-matrix mechanism. A print head contains a set of stiff wires arranged in a vertical column. As the print head moves across the paper, a solenoid drives the wires at high speed into the ribbon, making rows of dots that form characters and graphics. Though dot-matrix impact printers are noisier and less sophisticated than laser or inkjet models, businesses that use multi-part forms such as checks and invoices require impact printing. The pr