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Lec 5

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INTRODUCTION TO COMPUTING
LECTURE 5: COMPUTER HARDWARE OUTPUT DEVICES
Output - is data that has been processed into a useful form.
Output device - is any type of hardware component that conveys information to one or more people.
Display devices
Printers
Speakers, headphones, and earbuds
Data projectors
Interactive whiteboards
Force-feedback game controllers
Tactile output
Display device - visually conveys text, graphics, and video information.
Monitor - is packaged as a separate peripheral
LCD monitor
Widescreen
Liquid crystal display (LCD) - uses a liquid
compound to present information on a display device.
Resolution - is the number of horizontal and vertical pixels in a display device
Graphics processing unit (GPU) - controls the manipulation and display of graphics on a display device
LCD monitors - use a digital signal and should plug into a DVI port, an HDMI port, or a DisplayPort.
CRT monitor - is a desktop monitor that contains a cathode-ray tube, have a much larger footprint than do LCD
monitors.
Printer - produces text and graphics on a physical medium. Printed information is called a hard copy, or printout.
*Printers with a higher dpi (dots per inch) produce a higher quality output
Nonimpact printer - forms characters and graphics on a piece of paper without actually striking the paper.
Ink-jet printers
Photo printers
Laser printers
Thermal printers
Mobile printers
Label and postage printers
Plotters
Large-format printers
Ink-jet printer - forms characters and graphics by spraying tiny drops of liquid ink onto a piece of paper.
Multifunction peripheral (MFP) - is a single device that prints, scans, copies, and in some cases, faxes. Sometimes called
an all-in-one device.
Thermal printer - generates images by pushing electrically heated pins against the heat-sensitive paper.
Mobile printer - is a small, lightweight, battery-powered printer that allows a mobile user to print from a notebook
computer, smart phone, or other mobile device.
Label printer - is a small printer that prints on adhesive-type material.
Postage printer - prints postage stamps also postage.
Plotters - are used to produce high-quality drawings.
Large-format printers - create photo-realistic quality color prints on a larger scale.
Impact printers - form characters and graphics on a piece of paper by striking a mechanism against an inked ribbon that
physically contacts the paper.
Dot-matrix printer
Line printer
Dot-matrix printer - produces printed images when tiny wire pins on a print head mechanism strike an inked ribbon.

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INTRODUCTION TO COMPUTING LECTURE 5: COMPUTER HARDWARE OUTPUT DEVICES Output - is data that has been processed into a useful form. Output device - is any type of hardware component that conveys information to one or more people. ▪ Display devices ▪ Printers ▪ Speakers, headphones, and earbuds ▪ Data projectors ▪ Interactive whiteboards ▪ Force-feedback game controllers ▪ Tactile output Display device - visually conveys text, graphics, and video information. Monitor - is packaged as a separate peripheral ➢ LCD monitor ➢ Widescreen ➢ Liquid crystal display (LCD) - uses a liq ...
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