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Lecture Introduction to computing - Lecture 7

This lesson introduces you to the basics of hard-copy output dcviccs. You will learn about the most common types of printers and sec how each creates an image on paper. You will leam the criteria for evaluating different printers and examine some of the specialized printing dcviccs designed for professional use. | CSC 101 Introduction to Computing Lecture 7 Dr. Iftikhar Azim Niaz ianiaz@comsats.edu.pk 1 2 Last Lecture Summary I Output Devices Monitors CRT, LCD, PDP Comparing Monitors Size Resolution Refresh rate Dot pitch 2 3 Last Lecture Summary II Video Cards Ergonomics and Monitors Electronic Magnetic Field (EMF) Data Projectors LCD Projector Speakers and Sound Systems Sound Cards Headphone and Headsets 3 Putting Digital Content in Hands Most computer users can’t imagine working without a printer Printers give you something you can touch, carry, and share with others. Printed documents are essential in most workplaces, where people must share reports, budgets, memos, and other types of information. Three types of printers are popular dot matrix, ink jet, and laser 4 Outline Three most commonly used types of printers. Four criteria to be considered when evaluating printers. How an image is created by Dot matrix printer Ink Jet Laser Four types of high-quality printing devices commonly used in business. 5 Commonly Used Printers Impact printers Generate output by striking the paper Uses an inked ribbon Most common Dot Matrix Line Printer and Band Printers Non-impact printers Use methods other than force Tend to be quiet and fast Most Common Ink jet and Laser 6 Dot Matrix Printer Can produce sheets of plain text very quickly Used to print to multi-sheet pages Printing on wide-sheet paper Print head strikes inked ribbon Speed measured in characters per second (CPS) 7 7 Teaching Tip Figure 4B.5 on page 163 provides an excellent rendering of how the print head works. Be sure to refer to the image as you teach. Dot Matrix Printer Parts 8 Dot Matrix Printhead Mechanism Print head Mechanism which contains a cluster (or matrix) of short pins arranged in one or more columns. Printer can push any of the pins out in any combination. By pushing out pins in various combinations, the print head can create alphanumeric characters Forms a character by creating a series of dots. 9 9 . | CSC 101 Introduction to Computing Lecture 7 Dr. Iftikhar Azim Niaz ianiaz@comsats.edu.pk 1 2 Last Lecture Summary I Output Devices Monitors CRT, LCD, PDP Comparing Monitors Size Resolution Refresh rate Dot pitch 2 3 Last Lecture Summary II Video Cards Ergonomics and Monitors Electronic Magnetic Field (EMF) Data Projectors LCD Projector Speakers and Sound Systems Sound Cards Headphone and Headsets 3 Putting Digital Content in Hands Most computer users can’t imagine working without a printer Printers give you something you can touch, carry, and share with others. Printed documents are essential in most workplaces, where people must share reports, budgets, memos, and other types of information. Three types of printers are popular dot matrix, ink jet, and laser 4 Outline Three most commonly used types of printers. Four criteria to be considered when evaluating printers. How an image is created by Dot matrix printer Ink Jet Laser Four types of high-quality printing devices commonly used