Printers Information Computing Free Online Read
Printers Information:
- The World's First ComputerPrinter was a 18th CenturyMechanically Driven apparatus invented by Charles Babbage for his Difference engine. This system used a Series of Metal Rods with Characters Printed onThem and Stuck a Roll of paper Against the Rods to Print the Characters. The FirstCommercial Printers Generally used Mechanisms From electric Typewriters And TeletypeMachines,Which Operated in a Similar Fashion.
- Printers are Programmed Using a Programming Language. The Printer Interprets The Program, and the Outputs the Result. There are two Big Classes of Such Languages: Page Description Languages, and Printer Control Languages. A Page Description Language Describes what a Page Should look like. The Program in a page Description Language is Sent to the Printer, Which Interprets Them. Printer Command Languages are at a Lower Level Than Page Description Languages, they Contain Information That is Specific to the Printer Model
- The Line Matrix Printer is an Impact Printer in Which one Line of text is Printed at aTime. They are Mostly Associated with unit Record Equipment and the Early Days of Digital Computing, but the Technology is still in use. Print Speeds of 700 lines per minute Approximately 15 Pages per Minute were Achieved in the 1900s, Later Increasing to as Much as 1400 lpm. Line Matrix Printers Print a Complete line at a Time and have Speeds in the Range of 200 to 300 lines per Minute. The Different Types of line Printers are Drum Printers and Chain Printers.
- The Plotter is a Computer printer for Printing Vector Graphics. In the past, Plotters were used in Applications such as Computer Aided Design, Though they Have Generally Been Replaced with wide-Format Conventional Printers. A plotter Gives a hard Copy of the Output. It Draws Pictures on paper using a pen. Plotters are used to Print Designs of Ships and Machines, Plans for Buildings and so on.
