Understanding Input
Objectives :->Describe the types of output.
>Explain the characteristics of various display devices.
>Describe the factors that affect the quality of an LCD monitor or LCD screen.
>Describe various ways to print.
>Differentiate between a nonimpact printer and an impact printer.
>Summarize the characteristics of ink-jet printers, photo printers, laser printers, multifunction peripherals, thermal printers, mobile printers, label and postage printers, and plotters and large-format printers.
>Describe the uses and characteristics of speakers, headphones, and earbuds.
>Identify the purpose and features of data projectors, interactive whiteboards, and force-feedback game controllers and tactile output.
Output:-
>Output is data that has been processed into a useful form.
>An output device is any type of hardware component that conveys information to one or more people.
Display Devices :-
>A display device visually conveys text, graphics, and video information.
>A 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.
>The quality of an LCD monitor or LCD screen depends primarily on.
-Resolution
-Response time
-Brightness
-Dot pitch
-Contrast ratio
>Resolution is the number of horizontal and vertical pixels in a display device.
-A higher resolution uses a greater number of pixels.
>The 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.
>Plasma monitors are display devices that use gas plasma technology and offer screen sizes up to 150 inches.
>Televisions also are a good output device.
-require a converter if you are connecting your computer to an analog television.
>Digital television (DTV) offers a crisper, higher-quality output.
>HDTV is the most advanced form of digital television.
>A CRT monitor is a desktop monitor that contains a cathode-ray tube.
-have a much larger footprint than do LCD monitors.
Printers :-
A printer produces text and graphics on a physical medium.
-Printed information is called a hard copy, or printout.
-Landscape or portrait orientation.
-Printed information is called a hard copy, or printout.
-Landscape or portrait orientation.
Types of Printers :-
>An ink-jet printer forms characters and graphics by spraying tiny drops of liquid ink onto a piece of paper.
-Color or black-and-white.
-Printers with a higher dpi (dots per inch) produce a higher quality output.
>An ink-jet printer forms characters and graphics by spraying tiny drops of liquid ink onto a piece of paper.
-Color or black-and-white.
-Printers with a higher dpi (dots per inch) produce a higher quality output.
>A photo printer produces color photo-lab-quality pictures.
>A multifunction peripheral (MFP) is a single device that prints, scans, copies, and in some cases, faxes.
-Sometimes called an all-in-one device.
>A thermal printer generates images by pushing electrically heated pins against the heat-sensitive paper.
>A 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.
>A label printer is a small printer that prints on adhesive-type material.
Speakers,Headphones and Earbuds :-
>An audio output device produces music, speech, or other sounds.
>Headphones are speakers that cover or are placed outside of the ear.
>Earbuds (also called earphones) rest inside the ear canal.
Summary :-
*Various methods of output.
*Several commonly used output devices.
*Display devices, printers, speakers, headphones, earbuds, data projectors, interactive whiteboards, force-feedback game controllers, and tactile output.
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